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Best diagnostic test measurement tools - July 2026

Last Updated - July 3, 2026

1
Best Choice
20% Off

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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
20% Off

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

Picked by 474 people in the last week

FOXWELL

$135.96

$169.99
(20% Off)

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 brands from worldwide (America/Asia/Europe). You don’t need to pay extra software fee. AUTOVIN may not work on some older vehicles or certain vehicle brands. If AUTOVIN fails, please input the vin code manually or go to the Diagnostic Menu to select your vehicle model.
- [Easy to Use—Work Out of the Box] + [FOXWELL 2026 New Version] FOXWELL NT604 Elite scan tool is the 2026 new version from FOXWELL, designed for car owners who want to figure out the cause of issues before fixing car problems by scanning common systems like ABS, SRS, engine, and transmission. The NT604 Elite obd2 scanner diagnostic tool comes with the latest software—no need to waste time downloading software first. Plug the scanner into the OBDII port with OBDII cable to start the diagnosis.
- [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. Note：The device is a diagnostic tool, not a repair tool. To turn off a warning light, you must first physically repair the issue causing it. Only then can the scanner be used to clear the corresponding fault code.
- [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 like reset or relearn. For the SRS system, NT604 Elite can read and clear common fault codes not caused by a crash, but crash/collision data cannot be cleared.
- Kindly note: The FOXWELL NT604 Elite code reader provides specialized diagnostics for control modules including Engine, ABS, SRS, and Transmission systems. It does NOT support service functions such as oil reset, battery registration, ABS bleeding, throttle body relearn, or ABS relearn. Note: Proper operation critically depends on vehicle compatibility, which varies by make, model, and year — please check vehicle compatibility before purchasing or contact us for confirmation.
$135.96
$169.99 (20% Off)
2
29% Off

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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.

GEARWRENCH
29% Off

GEARWRENCH Professional Bi-Directional Diagnostic Scan Tool | GWSMARTBT

GEARWRENCH

$106.91

$149.99
(29% Off)

More Details
Main highlights
- Supports 23 vehicle reset/relearn functions, including throttle matching, ABS bleeding, TPMS reset, etc.
- OE-Level diagnostics on your smart device
- Live data mapping and freeze frame capturing
- Full bi-directional control, live actuation test
- FREE Software updates - No subscriptions, no fees – EVER
$106.91
$149.99 (29% Off)
3
Best Value
40% 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.

ANCEL
40% Off

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

$23.99

$39.99
(40% Off)

More Details
Main highlights
- The AD310 only supports the diagnosis of emission-related issues. If the engine fault is unrelated to the emission system, it cannot read the engine fault codes. The AD310 only supports use with the OBDII interface. If your vehicle has an OBDI interface, diagnosis cannot be performed even if an OBDII adapter is used.
- 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. 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. Pls confirm with our customer service whether it is compatible with your vehicle 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. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
- 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 emission codes in seconds after you fixed the problem. 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.
$23.99
$39.99 (40% 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.

YAMHOHO

Goniometer 12 inch 360° Clear Protractor Physical Therapy, for Medical Range of Motion Measurement Angle Ruler and Protractors Bulk for Classroom

YAMHOHO

$4.29

More Details
Main highlights
- TRANSPARENT FOR EASY READINGS - The clear plastic of the goniometer allows you to place the device directly on a joint or limb for easy observation.
- Package: you will get 1 piece 360 degrees goniometer 12 inch, it can help we assist in physical therapy by determining the range of motion of a joint; It is a kind of equipment that is always available at home
- EASILY DETERMINE RANGE OF MOTION - A goniometers primary purpose is to assist in physical therapy by determining the range of motion of a joint. It's an easy way to gauge recovery after surgery or physical therapy.
- CLEAR ISOM DESIGN - The easy to read 360° head features three scales to allow for a variety of readings. The arm's ruler features both inches and centimeters.
- AN ESSENTIAL TOOL FOR TREATMENT - A goniometer is an essential tool for anyone who works in or is going through physical therapy, sports therapy, or a rehab program following surgery or an accident.
$4.29
5

✖
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.

Ezyaid

Ezyaid PD Ruler with Instruction Manual - Pupillary Distance Ruler for Pupil Distance Measuring, PD Measurement Tool for Prescription Eyeglasses, Include Eye Care Tips

Ezyaid

$6.95

More Details
Main highlights
- What You Get: 1 plastic PD stick ruler for Pupillary Distance (PD) measurement, 1 special well-made instruction manual, and eye care tips
- Markings on Both Sides of Ruler: convenient and comfortable to use with either your right or your left hand, can also be used to measure eyeglass frame for lens replacement
- Instruction Manual Included: Ezyaid PD ruler packaged with well-made instruction manual, no need to look for how to use the PD elsewhere, save lots of your time and energy
- Ezyaid Care Your Eyes: Instruction manual include eye care tips on how to reduce the risk for myopia in children
- Easy to Use: Straight edge with nose bridge design, well positioned and perfectly match on nose making the PD measurement easily and accurately, helping to get more precise values for single PD or dual PD of each eye
$6.95

Best diagnostic test measurement tools - July 2026

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

GEARWRENCH Professional Bi-Directional Diagnostic Scan Tool | GWSMARTBT

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)

Goniometer 12 inch 360° Clear Protractor Physical Therapy, for Medical Range of Motion Measurement Angle Ruler and Protractors Bulk for Classroom

Ezyaid PD Ruler with Instruction Manual - Pupillary Distance Ruler for Pupil Distance Measuring, PD Measurement Tool for Prescription Eyeglasses, Include Eye Care Tips

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