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Best diagnostic test measurement tools - August 2025

Last Updated - August 3, 2025

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Dormont

Dormont Flo-Pro MD 3-in-1 Standard Gas Flow and Pressure Measurement Diagnostic Tool, 3/4" Female NPT Connection, Clip-On Battery Pack (4-AA), 120V AC Adapter, Bluetooth-Enabled, View Real-Time Data

Dormont

$339.00

More Details
Main highlights
- RELIABLE GAS SOLUTIONS: For over 70 years, Dormont has helped thousands of customers enjoy the peace of mind that comes from high-quality, readily available products they can rely on. As the inventor of the first moveable gas connector, our USA-based factory solely focuses on making the best. You can rely on their performance because every single one of our products is leak tested and manufactured according to ISO standards.
- MULTI-FEATURED: This lightweight device features a corrosion-resistant aluminum construction with black powder coat finish and annunciator LEDs that communicate the device status. It automatically converts flow rate in cubic feet/hour (CFH) to gas flow capacity in BTU/hour and displays gas pressure measurement in inches of water column (“ w.c.).
- FLOPRO-MD DIAGNOSTIC TOOL: Quickly diagnose gas flow and pressure issues and perform equipment start-up and commissioning processes with the innovative Dormont FloPro-MD 3-in-1 Gas Flow and Measurement Diagnostic Tool: a compact, palm-sized flowmeter, manometer, and calculator all in one.
- COMPLETE SYSTEM: Compatible with both natural gas (NG) and propane (LPG) appliances, this measurement system includes standard ¾” female NPT connections, as well as an AC-DC 120VAC power supply (for lengthier installations), clip-on battery pack (with included four AA batteries) for when a power outlet is not available, and a handy carrying case.
- BLUETOOTH-ENABLED: This smart device is equipped with Bluetooth (BTLE) connectivity, allowing you to log and view real-time and recorded data on your Android or iOS device using the free app (available on Google Play and Apple App Store).
$339.00
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

FOXWELL

FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission, Check Engine Code Reader for Cars and Trucks, Diagnostic Scan Tool with SRS Airbag, Automotive Diagnostic Tool with Live Data

FOXWELL

$169.99

More Details
Main highlights
- [Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level car scanner diagnostic tool only offers plastic bag to hold the scanner.However, NT604 Elite automotive scanner is equipped with solid protective case, preventing your obd2 scanner from damage. Then you don’t need to pay extra money to buy a solid toolbox.
- [Fantastic AUTOVIN] + [No extra software fee] Through the AUTOVIN menu, this NT604 Elite car scanner allows you to get your V-IN and vehicle info rapidly, no need to take time to find your V-IN and input one by one. What's more, the NT604 Elite ABS SRS scanner supports 60+ car makes from worldwide (America/Asia/Europe). You don’t need to pay extra software fee.
- [Easy to Use--Work out of the box] + [FOXWELL 2025 New Version] FOXWELL NT604 Elite scan tool is the 2025 new version from FOXWELL, which is designed for those car owners who want to figure out the cause issue before fixing the car problem via scanning the most common systems like ABS SRS engine and transmission.The NT604 Elite obd2 scanner diagnostic tool comes with latest software, which can be used out of box. No need to waste time to download the software first.
- [Affordable] + [Reliable Car Health Monitor] Will you be confused what happens when the warning light of ABS/SRS/transmission/check engine flashes? Instead of taking your cars to dealership, this FOXWELL scanner will help you do a thorough scanning and detection for your cars and pinpoint the root cause. It will t-urn off the car warning light after the problem is fixed.👉TIPS: Airbag crash/collision data can NOT be cleared even if you replace the new airbag.
- [5 in 1 Car Diagnostic Scanner] Compared with obd scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also serves as ABS/SRS scanner, transmission and check engine code reader. When it’s an odb2 scanner, you can use it to check if your car is ready for annual test through I/M readiness menu. In addition, live data stream, built-in DTC library, data play back and print, all these features are a big plus for it. Note: doesn't support maintenance functions.
- Kindly note: this FOXWELL NT604 Elite car code reader only support diagnostic function for control modules like ABS, SRS, transmission and check engine. It can NOT support maintenance functions like EPB Reset, ABS Bleeding, Oil light reset or battery reset programming... Regarding the diagnostic function, the compatibility varies by car makes and models, please confirm the coverage BEFORE purchasing.
$169.99
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ANCEL

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

ANCEL

$27.99

$30.99
(9% Off)

More Details
Main highlights
- Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
- OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. This is not the case with the AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing.
- Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.
- CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.
- Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
$27.99
$30.99 (9% Off)
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

QPKING

Motorcycle System Diagnostic Test Measurement Tools M3-C Motorcycle Fault Code Readers Scan Tools Moto Diagnostic Test Measurement Tools Compatible for Suzuki 6P/4P,Vespa,Generation IV 6P, OBDII 16P

QPKING

$75.99

More Details
Main highlights
- 🚴🏻【Wide Compatibility】Motorcycle Fault Code Readers Scan Tools support the diagnosis of Asian, European and American multi-brand motorcycles, M3-C is suitable for motorcycles of Yamaha, Honda, Kawasaki and OBD2, Supports 11 languages, You can switch the language you need anytime.
- 🚴🏻【Warranty】 We offers 24-month warranty and 7x24 hours friendly customer service to ensure your shopping experience. Any issues, please feel free to contact us, we will provide you with a solution ASAP.
- 🚴🏻【System Diagnosis Features】The Motocycle diagnostic tool Support engine / ABS / Tire pressure / Anti-theft and other systems, It can quickly read and clear diagnostic trouble codes, view freeze frame, display data stream and do active tests, get vehicle information, You are allowed to perform a complete and deep detection for your motorcycles, rather than send it directly to repair shop, very suitable for diyers.
- 🚴🏻【Quick Test】：Quick test is to automatically scan the assembly status of all systems of the vehicle model and read the fault codes.
- 🚴🏻【Portable and Convenient】The motorcycle diagnostic requires no Internet connection or setup, and with a lightweight body that can be operated with one hand, you can take it anywhere and use it very conveniently.
- 🚴🏻【Multi-language Selection】: Motorcycle System Diagnostic Test Measurement Tools supports 12 languages are available. Available in Vietnamese,Khmer,Thai,English,French,Chinese,Bahasa Indonesia,Traditional Chinese and German.
- 🚴🏻【Free Software Upgrade】Connect the device to the computer and wait for the device to be recognized by the computer. After the recognition is successful, a new drive symbol will appear on the computer. Open this and replace the “DIAGNOSE" folder in the drive with the downloaded “DIAGNOSE" upgrade folder, and then power on again. The updated files can be obtained by contacting the customer service.
- 🚴🏻【Easy To Use】 M3 Motorcycle Code Reader Scaner is a handheld motorcycle diagnostic tool for mainstream motorcycle brands and can help technicians diagnose problems faster and make repairs. This tool has functions such as voltage detection, multi-language selection, and unit switching. It has a clear interface and is easy to operate. It is a good helper for motorcycle maintenance.
$75.99
5
Best Value
38% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Simhevn
38% Off

Simhevn Electronic Digital Calipers, inch and Millimeter Conversion,LCD Screen displays 0-6" Caliper Measuring Tool, Automatic Shutdown, Suitable for DIY/Jewelry Measurement (New150mm Black Plastic)

Simhevn

$7.99

$12.99
(38% Off)

More Details
Main highlights
- [Zero reset function]: Intelligent design, you can easily reset to zero by pressing the "Zero" button at any position of the measurement, and start a new measurement. It is very suitable for differential measurement, convenient for measurement, and easy to carry.
- [Measurement accuracy]: measurement range: 0-6"/0-150mm; resolution: 0.01"/0.1mm; accuracy: ±0.2mm/0.01. A perfect and accurate caliper measuring tool, suitable for home/jewelry/DIY measurement, please pay attention. This caliper is not suitable for professionals with high technical accuracy.
- [LCD and automatic shutdown]: High-quality and trustworthy digital calipers, LCD display screen reading is more convenient, quick and easy to get accurate results, open automatically turn on, and automatically turn off after 5 minutes of use. It is powered by a battery and includes a pre-installed battery and a spare battery.
- [Inch/mm conversion]: Use Simhevn digital caliper to switch freely between inches and millimeters. The switching function of the two units can meet different needs. It is more convenient and widely used for measuring the value you want.
- [4 measuring methods and safety]: Digital calipers can be used to measure inner and outer diameters, depths and steps. The pins of the caliper are made of plastic, so there is no short circuit when measuring the battery or inside. Contact with the positive and negative poles. The safety is higher than that of metal calipers.
$7.99
$12.99 (38% Off)

Best diagnostic test measurement tools - August 2025

Dormont Flo-Pro MD 3-in-1 Standard Gas Flow and Pressure Measurement Diagnostic Tool, 3/4" Female NPT Connection, Clip-On Battery Pack (4-AA), 120V AC Adapter, Bluetooth-Enabled, View Real-Time Data

FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission, Check Engine Code Reader for Cars and Trucks, Diagnostic Scan Tool with SRS Airbag, Automotive Diagnostic Tool with Live Data

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

Motorcycle System Diagnostic Test Measurement Tools M3-C Motorcycle Fault Code Readers Scan Tools Moto Diagnostic Test Measurement Tools Compatible for Suzuki 6P/4P,Vespa,Generation IV 6P, OBDII 16P

Simhevn Electronic Digital Calipers, inch and Millimeter Conversion,LCD Screen displays 0-6" Caliper Measuring Tool, Automatic Shutdown, Suitable for DIY/Jewelry Measurement (New150mm Black Plastic)

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