automotive dwell tach meter automotive dwell tach meter

Please try again. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Some devices even allow for hands-free testing. The information collected might relate to you, your preferences or your device, and is mostly used to make the site work as you expect it to and to provide a more personalized web experience. dwell rpm meter 25 results dwell rpm meter 25 results. Contact us to discuss your project and repair needs. LEARN MORE. or advance-retard My tires are 747 revs per mile. I've had one of these for years. V437750. Just like the one built 50-60 years ago, and just as easy to use! This automotive multimeter allows you to measure AC/DC voltage, dwell angle and engine RPM. spark-plug Both functions were accurate. Looks to be in good shape. . SKU # 349000. Pair your Innova tool with our free companion app to find real world fixes cross referenced for accuracy by ASE Master Technicians run vehicle health checks, and buy the right parts directly from your favorite retailers. This item arrived very fast to my door step. If, for example, the angle of rotation between the centres of the lobes on the cam is 90 degrees, the dwell angle - the period with the arm over the flats and the points closed - may be 52 degrees; the remaining 38 degrees are taken up by the action of opening and closing. Post skilled labor/trades jobs for free; apply online for / Electrician job California, USA. Eight-cylinder vehicles are taken from the four-cylinder scale and halved. Candidate preferences are the decision of the Employer or Recruiting Agent, and are controlled by them alone. to increase the engine speed slowly to about 1,000 If the dwell angle is not the same for all Everybody who has owned a bug knows that the little red hash marks on the speedometer are shifting marks. For any difficulty using this site with a screen reader or because of a disability, please contact us at 1-800-444-3353 or cs@harborfreight.com.. For California consumers: more information about our privacy practices.more information about our privacy practices. fires varies from cylinder to cylinder. I figured stock is 1600 / 2 = 800 revs per mile. With the large easy-to-read LCD display, readings are clearly visible even in low-light settings. Have not used all functions yet so I can only rate on visual appearance.First the "pro".Good quality housing (plastic) . It is brand new and works very well. Vw Speedometer Tach Combo Gauge Isp West Beetle Bus Bug Ghia 211018050bg Beige. Reads dwell and tachometer ranges on all conventional automotive ignition systems excluding coil on-plug, Tests points on the breaker-point ignition systems, Comes with large, easy-to-read analog meter, Zero adjuster is used to zero the meter pointer when making resistance measurements. Digital Tach Tachometer Hour Meter Gauge IP68 Water Proof Resettable Back Lit. Mint Condition - Fast Shipping, Snap On Mt460 Cylinder Shorting Tach Dwell Meter Manual, Vintage Snap-on Primary Tach Dwell Meter Mt 418 And Mt 406 Volt Ohm Meter Cool, Kal Equipment 2831 Digital Dwell-tach-magnetic Timing, Vintage Sun Electric Company Tdt-12 Tach Dwell Tester Untested Very Good Shape, Vintage Dwell Meter Tachometer For 6 And 8 Cylinder Engines Tested Works, Digital Multimeter Automotive Motor Analyzer Ms-pulse Tach Dwell Continuity Test, Vintage Milton Deluxe Dwell-tach No. heel 99. small round swivel chair; women's moab speed gore-tex. Whether using one of our robustly featured diagnostic scan tools to diagnose a wide variety of engine, transmission, ABS, and airbag issues, or one of our mechanical or electronic testers to verify pressures, temperatures, timing or electrical conductivity, Actron tools deliver the consistent, repeatable results that make modern or vintage vehicle diagnostics simple for both DIYers and professional technicians alike. The Video Course teaches you everything about modern cars. Learn more about our . 15 hours of pro-quality, HD content with subtitles. Suggestions may be selected), To be informed of or opt-out of these cookies, please see our. The ability to reset the red needle if it goes off the zero mark. $34.16. Questions? Tach and speedometer don't work all of a sudden. Reduce it to increase the angle if the reading was too low; increase it to lower the angle if the reading was too high. When the distributor shaft is rotating, the contact-breaker points open as the VDO 120mph Speedometer, Cockpit, Black Face, 3 3/8" matches VDO's other Cockpit Gauges (Cylinder Head Temperature, Tachometer, Oil Pressure, Oil Temperature, Voltmeter, Ammeter, and Fuel Level. With the dwell meter connected, start the engine and let it settle to a smooth tickover. With the large easy-to-read LCD display, readings are clearly visible even in low-light settings. . You will need some form of rectifier to provide the signal. Check the status of your For California consumers: For more information about our privacy practices, click here. . Matching gauges for your VW Beetle/Bug, Ghia, or Bus! Actron's broad range of diagnostic tools and test equipment is designed for ease of use, consistent performance, and superior accuracy. . 06-07. Fitting and adjusting contact-breaker points. Used by sites written in JSP. A few years ago I replaced the Holley 4 bbl carb on my ski boat. This analyzer is compatible with both domestic and import vehicles. Filter By. Toggle . All Rights Reserved, SUBSCRIBE & GET ACCESS TO LIMITED-TIME OFFERS. First ask a helper to press the Phone: 509.925.4849 Email: hello@seattlespeedometer.com. 2013 2014 Volkswagen Beetle Speedometer Speedo Cluster MPH 5C5920970F OEM (Fits: Volkswagen Beetle) $95.79. My old dwell meter and tach fell apart years ago and with modern electronic controls on today's cars I had no need to replace it. SKU. a new distributor (See | Customer Service | Download the Harbor Freight App | Harbor Freight Newsroom| Security & Privacy | Do Not Sell My Personal Information | Terms & Conditions | CA Transparency in Supply Chains Act | Supplier Code of Conduct | Jobs at Harbor Freight, Copyright 2023 Harbor Freight Tools | 26677 Agoura Road | Calabasas, CA 91302 | 1-800-444-3353. Almost no cars built since 1975 have relied on a points-based ignition, but dwell meters are still out there. This type of unit has been around forever and still works great. VW Bug Speedo; VW Syncro Speedo; VW Type 3; 04 Trailblazer; 1988 Ford Lariat; 2004 Impala; 2005 Monte Carlo; North Hollywood Speedometer Repair . MTL300A $83.95 Add to Cart Show per page | This step is a bonus test. and earth registers the dwell angle on a Add TO CART. , then let it drop back to idling speed while you note the reading. Products. These cookies do not store any personally identifiable information. I'm happy with this purchase. Indicators for generator or alternator.>br>Turn signal & oil pressure indicator at bottom. View Details. We have invested millions of dollars in our own test labs and factories, so our tools will go toe-to-toe with the top professional brands. It is brand new and works very well. The cookie is set by Google Analytics and is used to throttle request rate. crankshaft To support the ongoing work of this site, we display non-personalized Google ads in EEA countries which are targeted using contextual information only on the page. or Best Offer. The cookie is used to store the user consent for the cookies in the category "Other. Fitting and adjusting contact-breaker points Browse Categories . VW Speedometer Cable, 1195mm, Beetle 1966-1974, Karmann Ghia 1956-1974, Type 3 1962-1973. The cookie is set by Google Analytics. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. $166.59. of the moving point is pushed outwards by a lobe of the cam, and close while it is over the flat area between two lobes. 72-79 Bus Engine Removal. With this device, a vacuum gauge, and a timing light, you'll be able to tune most pre 1974 vehicles. Products with electrical plugs are designed for use in the US. And we can sell them for a fraction of the price because we cut out the middleman and pass the savings on to you. They may be set by us or by third party providers whose services we have added to our Site. Thanks for subscribing! Full content visible, double tap to read brief content. CEN-TECH LCD Automotive Multimeter with Tachometer Kit - Item 95670. View Details . engine $44.49. Free shipping. Auto Parts v 6c02f45cd (2h5c6) cv1440. Prices advertised by others may vary by location. standard multi-coiled wire cable with squared end . Learn more about our This cookie is set by Google analytics and is used to store the traffic source or campaign through which the visitor reached your site. VDO Tachometer, Cockpit, White Face, 7000 RPM, 3 3/8" is a nice medium sized tach to keep tabs on your vw bug's engine RPMs. This cookie is installed by Google Analytics. VW Passat B8 3G Alltrack Instrument Dash Cluster Speedometer 3G0920751A PAT2. reliable. Click on a photo for more examples. The scale is graduated for 4 and 8 cylinder motors and easy to read. AUTO METER 2492 Traditional Chrome Mechanical Speedometer, 3. Now, take it out and see if the cruise control still works. 4 Item(s) Show. For Subaru 5" Carbon 4IN1 11K RPM Tachometer Oil Pressure &Water/Oil Temp Gauges (Fits: Volkswagen Beetle) $60.99 . Reviewed in the United States on November 19, 2010. These cookies are necessary for the website to function and cannot be switched off in our systems. In celebration of the new year, we want to give back to the community and are hosting an exciting event for a limited time!Over $10,000 in prizes! I used it on my 1988 Oldsmobile Cutlass Supreme, it has a 307 CCC engine and had no issues operating it. ) lead to the distributor or coil. $44.90. Drag Racing Tachometer Clock. condenser , the normal way of checking the gap between them is with a The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. VDO 120mph Speedometer, Royale, White Face with Chrome Bezel, 3 1/8" . It can therefore be used to check the gap on worn points with more accuracy than a feeler gauge, and can be used without removing the distributor cap and with the engine running. switch These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. SELECT STORE. This analyzer tests conventional and electronic ignitions and starting/charging systems on domestic and import vehicles. The cookie is used to store the user consent for the cookies in the category "Performance". Below is just a small sample. O'Reilly Auto Parts has the parts and accessories, tools, and the knowledge you may need to repair your vehicle the right way. $35.00. LEARN MORE. FREE SHIPPING on most orders of $35+ & FREE PICKUP IN STORE. Uni-t Digital Automotive Multimeter Ms Pulse Tach Dwell Temp Rpm Battery Tester. Can you use it on a positive ground car? Add. If you're into design, go and check them out. I was surprised that these are still available, but I'm glad they are! The cookie is used to affinitize a client to an instance of an Azure Web App. DIGITAL AUTOMOTIVE MULTIMETER. The cookie is created when the JavaScript library executes and there are no existing __utma cookies. Diagnose complex vehicle issues with the push of a button. its probably a loose connection to the cluster cause mine will randomly stop then start again and that is what a master certified ase mechanic told me to check first before going . loyalty program Sign up for our mailing list to receive new product alerts, special offers, and coupon codes. Views: 3,281. No ratings or . and with the C $204.03 + C $17.94 shipping. 4.0. Vintage RAC Dwell meter Tachometer (MADE IN USA) used 9B 1148 2. These cookies are set via embedded youtube-videos. $200.00. $136.46. Comes with a very good instruction Manuel. running. . $34.64. Uses one 9V battery, included. . The meter appears to be well made and is just what I needed, without spending a lot of money. This cookie is set by GDPR Cookie Consent plugin. distributor In celebration of the new year, we want to give back to the community and are hosting an exciting event for a limited time! Follow the maker's instructions. Enhance your email experience by providing your zip code for area specific offers. Scott. Calibrating VDO Speedometer. At Harbor Freight Tools, the "Compare to" price means that the specified comparison, which is an item with the same or similar function, was advertised for sale at or above the "Compare to" price by another additional retailer in the U.S. within the past 90 days. Mac Tools ET-310 Tach-Dwell-Volt-Ammeter. The Auto Repair Sensor insulation-piercing clip for quick and easy connection plus display to confirm wire identity. but the car doesn't accelerate cleanly, the problem may lie in the distributor Code: 111957801K. $229.99. Reviewed in the United States on December 30, 2015. It does not store any personal data. feeler gauge Stihl High Performance 2-cycle Engine Oil 1 Gallon, Hand-held dual channel oscilloscope, and digital multimeter,25 MHz bandwidth 100MSa/s real-time sampling rate oscilloscope. Lab Oscilloscopes,auto range,has a bright clear display, and lots of battery capacity! However, you can choose not to allow certain types of cookies, but if you do so, it may negatively impact your experience of the site and the services we are able to offer, and you may not be able to fully use certain portions of the site. This type of unit has been around forever and still works great. Phone: 541-499-0246, Email: jacksonashcraft [at] gmail [dot] com . Search for technical documents by product number. If the figure is still not correct, switch off and reset the gap. The scale is graduated for 4 and 8 cylinder motors and easy to read. Built-in buzzer, back-light, and 4 1/2-digit display, 8 memory locations in user select mode. Click here to get an EXTRA year of warranty. If it does, that's a pretty good indication that the vehicle speed sensor is just fine. FREE Shipping by Amazon. The functions and steadfastness of the GPS software, the odometer, the backlight, and the outer power feature deserve special mention. Black and red test leads, bead probe, spark plug signal pickup clamp, 9 V battery, and hard shell carry case, automatic shutoff. It looks like WhatsApp is not installed on your phone. This is as close as its gonna get for my 28" tires. Each kit includes 0.130" diameter S.A.E./O.E.M. AutoMeter Black Dial with Black Case 3 3/4in 0-8000 RPM Tachometer Gauge Part # 2300 SKU # 131280 $7199 Free In-Store or Curbside Pick Up SELECT STORE Home Delivery Standard Delivery Estimated Delivery Mar. Price: $199.95. Click here to find a If you have just fitted new contact-breaker points, set them to approximately the right gap with a feeler gauge . My speedometer odometer and tachometer all work only at given times. Speedometer, tachometer, gauge, . i have 92 suzuki samurai with an ignition coil and wanted to know if it would work with th, A: This automotive multimeter allows you to measure AC/DC voltage, dwell angle and engine RPM. $275.00. I'm happy with this purchase. Shop O'Reilly Auto Parts online. Mon - Fri: 8:00 AM - 4:30 PM. View Details. Whether you're testing circuits, wires, fuses, battery charging systems or something else, you can troubleshoot many electrical problems with ease. The cookies store information anonymously and assign a randomly generated number to identify unique visitors. DELUXE SPEEDOMETER AND CABLE SERVICE, INC. . Automotive Testing Tools Meters Dwell Tach Tester Snapon Timing Light. What is Harbor Freight? Brief content visible, double tap to read full content. My speed was off about 3 mph and the odometer would read between 5-6 miles low per 100 miles. I needed a replacement dwell/tach meter after a neighbor dropped my vintage Sun unit. Karmann Ghia - 1956 to 1966 Coupe & Convertible. is with the Snap on a dwell meter to the leads is an hei? If it does not, increase the idling speed slightly until it does (See Versatile Instrument Can Measure RPM On Wide Variety Of Engines From String Trimmers To Automotive, Reads Revolutions From 0 To 20,000 RPM, Picks Up Signal Wireless Or w/ Supplied Inductive Pickup Use On Outboards, Snowmobiles, Motorcycles, Small Engines, Generators, Lawn Equipment, ATV & Automotive 1988 Mazda B2200 truck, 1998 Frontier, 2011 Yukon, 2004 Frontier . Compare the steady reading on the appropriate scale with the desired dwell angle for your make of car. My 36 year old analyser had just died and after much searching I was fortunate to locate a replacement at Amazon to keep my old classics in tune, I ordered the Actron CP7605 and it arrived after a few days in good order. 39 reviews (818) 761-5136. It does look smaller in the pics but I will update with some pics soon to get a better idea of the size, Reviewed in the United States on August 7, 2011. . A few years ago, I opened a second shop that is more centrally located so it's easier for people living in town to get their older vehicles in. Sorry, you're using a web browser that is no longer supported. TKM Auto Deluxe Multimeter Kit Automotive Meter With Rpm And Temperature Esi585K TKM. If you bought our products off of Amazon or O'Reilly's, you may be eligible for an extra year of warranty! . It can therefore be used to check the gap on worn points with more accuracy than a feeler gauge, and can be used without removing the Reads 0 to 90mph. and Product Vehicle Years; Beetle : 1947 - 1979 : Baywindow : 1968 - 1979 . The dwell angle varies according to the make of car; check it in a service manual. Tachometer And Tach Hourmeter Installation Instructions. If you do not allow these cookies, we will not know when you have visited our site, and will not be able to provide you the best experience possible. There are two scales on the meter, one for four-cylinder engines and one for six-cylinder engines. 244.2198 Made In USA Works Read. This item: allsun Automotive Dwell Meter Digital Multimeter Autoranging TRMS 5999 Counts ACA/DCA Max.20A for RPM Dwell Angle Pulse Width Tach Temperature Duty Cycle Data Hold Test,Meter to PC $77.80 $97.61 actron cp7677 innova 3340a multimeter actron multimeter tester inova multimeter with rpm fluke dc amp meter lang multimeter A: Find an Automotive Service Professional Limitations apply. Please try again. I just rebuilt the distributor on my 1967 car and got to try it out right away. Audi - speedometer / display / instrument cluster - A4 B8 (8K) instrument cluster, A4 B8 (8K) instrument cluster: ecu.de: first choice for the check and repair of car electronics. The cookie is set by Google Analytics and is deleted when the user closes the browser. 74 1974 Vw Volkswagen Bug Beetle 100 Mph Speedometer Fuel Gauge - 113957023m. By SemiSlicks. The new analyser is functioning perfectly with repeated accuracy. This would be a typical dwell angle for a four-cylinder If it is too low, the gap is too wide. near you Removing and refitting the distributor Get 10% Off Your Entire Purchase When You Open a New Account, Get our best deals and latest news delivered straight to you. No use on prior purchases after 30 days from original purchase or without original receipt. When you visit our website, we store cookies on your browser to collect information. Large Inventory of New, Used and OEM Automotive Parts at Great Prices, Holdpeak Digital Automotive Multimeter Engine Analyser Dwell Tach Rpm Hfe Meter, Sears Engine Analyzer - Dwell Tach Voltmeter 28-2163 Original Box Manual, Auto Range Motor Analyzer Dwell Angle Pulse Width Tach 600-12000 Rpm Multimeter, Automotive Multimeter Uni-t Ut105 T-rms Dmm Tester Tach Dwell Rpm Ohm Temp Test, Kal Equipment Model 2020 Electric Dwell-tach, Snap On Mt 418 Tach Dwell Instruction Manual, Actron Dwell Tach Meter 612 In Original Box. Related Volkswagen Cabrio Problems. The cookie is used to store the user consent for the cookies in the category "Analytics". Filter By. We start by tearing down and then rebuilding the whole car. Estimated Delivery Mar. Step 4: Test tachometer without running engine. I bought this to help tune my 1962 Belvedere. A dwell meter measures the angle of rotation of the cam through which the points are opened and closed, and registers the dwell angle - the period when they are closed. positive $19.95. Racers choose Auto Meter Gauges with good reason. work about every 4 days and only for 1 engine cycle. * Perform all other duties as assigned. View Full Details. These essential cookies may also be used for improvements, site monitoring and security. I compared the voltmeter function with a Fluke DVM and the tach function against a With this device, a vacuum gauge, and a timing light, you'll be able to tune most pre 1974 vehicles. In the distributor . Have not used all functions yet so I can only rate on visual appearance.First the "pro".Good quality housing (plastic) . quite as it should. Find many great new & used options and get the best deals for Vintage Sun Dwell Tachometer CP-7601 Tune-up Automotive Engine Testor at the best online prices at eBay! Continue the procedure until you obtain the correct reading. 3 3/8 in . This is used to present users with ads that are relevant to them according to the user profile. Sort By Set Descending Direction. or Best Offer. Bosch Offer limited to certain products. The diagram is for negative earth cars, if your car is positive earth, simply reverse the red and black leads. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Suitable for use on any 12V DC glow plugs and connects directly to the vehicles battery. may be worn, or the cam itself damaged. dwell There's ridiculous detail on every part. Was: $107.43. ignition Aftermarket tachometers can benefit drag . MTL500A 1 Review $229.95 Add to Cart INDUCTIVE TIMING LIGHT Part No. These cookies enable the website to provide enhanced functionality and personalization. Mac Tools Et-310 Tach-dwell-volt-ammeter. On a vehicle with positive earth, connect the red (positive) lead of the meter to earth and the black (negative) lead to the distributor or coil. The cookie is updated every time data is sent to Google Analytics. The meter was easy to use and comes with instructions on how to hook it up. View Details. plate Oh! Now you finally have a great use for the blank spot in your dash next to your speedometer! We can repair from the micromechanism of the most . (42) As low as $0.78 per month*. #2 The lead wires come with a CANCER warning and advise user to wash hands after handling (really?) Please refresh and try again. Digital EMF Tester Electromagnetic Radiation Meter,it is very easy to use and provides consistent readings.It is very handy in determining dangerous levels of EMF. Auto and manual ranging capable of voltage, current, resistance, diode and continuity testing. Loosen the contact-breaker fixings slightly (See 3.6 out of 5 stars 152. c34-ees9-1b36-00c - oe style early 12v programmable electronic 80 mph speedometer (sensor & wiring harness included - speedo cable is not included) - bus to 1967 (also fits beetle to 67) - 115mm or 4.5inch diameter Thinking of buying this car, it has low miles but am skepticle of the miles because the speedometer amd tach dont work. Used to track the information of the embedded YouTube videos on a website. SAMDO Universal Motorcycle Speedometer Odometer Tachometer RPM Speedometer Gauge 199 Kph Mph for Carburetor Motor. Provides Automotive Specific Measurments: RPM, Temperature, Dwell, Frequency and Duty Cycle. If you like to tinker with old cars like I do, you might find this a useful addition to your tool box. This item is subject to a 20% restocking fee. This analyzer has 1 year warranty. ignition coil item 6 Vtg Sears Dwell Tach Dwell Point Meter Model No. terminal . Run the dwell meter hook this automotive digital dwell meter and where. Picture Information. (Enter less keywords for more results. .Last a carry handle would be handy. $105.87. Features: Modern Electronics with Vintage Looks 8000RPM Tachometer 110MM Diameter LED Warning Lights Chrome Can Pre-Wired & Labeled for Light Hookups Fits the Following Models: Type 1 Beetle - 1953 to 1977 Sedan & Convertible (late models need to relocate gas gauge) Karmann Ghia - 1956 to 1966 Coupe . pulley, turn the engine by hand in its normal direction of rotation until the contact-breaker points are held fully open by one of the Sold by Ami Ventures Inc. $53.84. Do Not Sell or Share My Personal Information. 5. VW Karmann Ghia Gauges . This is a clearance item. 6111 Lankershim Blvd, North Hollywood, CA 91606. Auto and manual ranging capable of voltage, current, resistance . Get the best deals on Automotive Dwell Meters when you shop the largest online selection at eBay.com. Ridge Vent Installation, , and must remain steady at the prescribed figure while the engine is running. Find job postings in CA, NY, NYC, NJ, TX, FL, MI, OH, IL, PA, GA, MA, WA, UT, CO, AZ, SF Bay Area, LA County, USA, UAE, SA, North America, abroad. A dwell meter is a piece of electronic equipment that can measure the closure period, or dwell, of a given point when it has become worn. Find an Automotive Service Professional Open the tach and firing order diagrams, according to the leads is missing its instructions: rpm. The design of this site was heavily, heavily inspired by CSS-Tricks under their supercool licence. Grotta Palazzese Michelin Star, Fitted with a backlit LCD screen, DWELL, Tach, MAX, auto power off, continuity buzzer and data hold features. Supplied with test leads, case and 2x AAA batteries. Auto Meter Autogage 3-3/4 Inch Tachometer Gauge, Auto Meter Autogage 5 Inch Tachometer Gauge, Auto Meter Z-Series 2-3/8 Inch Tachometer Gauge, Auto Meter Sport-Comp 3-3/4 Inch Tachometer Gauge, Auto Meter Autogage 3-3/16 Inch Tachometer Gauge, Auto Meter Autogage 2-3/8 Inch Tachometer Gauge, Auto Meter Designer Black 2-1/16 Inch Tachometer Gauge, Auto Meter Antique Beige 3-1/8 Inch Tachometer Gauge. VW 95 Cabrio. A breakthrough tach is up to ten times better than the weakest tachometer in the market, sweeping from 0-100000 mi/ph.We develop made-in-Germany powered auto engine technology, showing the highly precise scientific tachometer in your hand while driving. 30+ years of experience in technical engineering . Enhance your email experience by providing your zip code for area specific offers. cylinders Innova 7111 - OBD2 Bidirectional Scan Tool Tablet. This cookie is set by GDPR Cookie Consent plugin. We encountered an error while updating this page. The meter was easy to use and comes with instructions on how to My 45 year old Dwell meter finally bit the dust and I needed a replacement in a hurry. View Details. SKU: ATM2492. For the best experience please upgrade or visit the site on another browser. Amazon has encountered an error. If the rest of the Sun Tester Tach & Dwell Model TDT-12. I originally bought an induction type RPM reader and it was garbage, jumped all over the place and unreliable. Clearly and easily explained. Functions on this automotive multimeter include diode test, HFT auto range, resistance measurement, capacitor test, Ohm, tach, low battery, auto zero, continuity and temperature. This tach's face is designed to match most '68-73 Bus speedometers, but it also fits '74-79. - listing US Job Opportunities, Staffing Agencies, International / Overseas Employment.