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10 Best diagnostic test measurement tools of 2026

Save up to 41% off
  • Best Choice

    1

    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
    9.8
    Exceptional
    watcher 472+ bought this week

    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

    18% Off
    • is discontinued by manufacturer:‎No
    • product dimensions:‎7.68 x 3.54 x 1.18 inches
    • manufacturer part number:‎NT604 ELITE
    • item weight:‎2.79 pounds
    • customer reviews:4.3 4.3 out of 5 stars 4,432 ratings 4.3 out of 5 stars
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  • Value for Money

    2

    GEARWRENCH Professional Bi-Directional Diagnostic Scan Tool | GWSMARTBT
    GEARWRENCH
    Available in: 6 styles
    9.7
    Exceptional

    GEARWRENCH Professional Bi-Directional Diagnostic Scan Tool | GWSMARTBT

    28% Off
    • is discontinued by manufacturer:N/A
    • product dimensions:‎3.4 x 2.1 x 0.9 inches
    • manufacturer part number:‎GWSMARTBT
    • item weight:‎3.87 ounces
    • customer reviews:4.0 4.0 out of 5 stars 476 ratings 4.0 out of 5 stars

  • 3

    Ezyaid PD Ruler with Instruction Manual - Pupillary Distance Ruler for Pupil Distance Measuring, PD Measurement Tool for Prescription Eyeglasses, Include Eye Care Tips
    Ezyaid
    9.6
    Exceptional

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

  • 4

    Goniometer 12 inch 360° Clear Protractor Physical Therapy, for Medical Range of Motion Measurement Angle Ruler and Protractors Bulk for Classroom
    YAMHOHO
    9.4
    Excellent

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

    • part number: YAMHOHO
    • color: Transparency-12in
    • item weight: 2.39 ounces
    • customer reviews:4.7 4.7 out of 5 stars 75 ratings 4.7 out of 5 stars
    • package dimensions: 11.06 x 2.28 x 0.28 inches

  • 5

    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
    9.3
    Excellent

    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)

    25% Off
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  • 6

    MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow
    MOTOPOWER
    9.2
    Excellent

    MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

    41% Off Limited Time Deal
    • is discontinued by manufacturer:‎No
    • product dimensions:‎2.75"L x 0.91"W x 6.02"H
    • manufacturer part number:‎MP69033
    • item weight:‎10.2 ounces
    • customer reviews:4.6 4.6 out of 5 stars 48,090 ratings 4.6 out of 5 stars

  • 7

    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
    9.1
    Excellent

    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)

    • product dimensions:4.33 x 1.38 x 0.16 inches 3.17 ounces
    • batteries:1 LR44 batteries required.
    • country of origin:China
    • asin:B08ZNQRB39
    • date first available:March 22, 2021

  • 8

    FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light
    FOXWELL
    9.0
    Excellent

    FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

    20% Off Limited Time Deal

  • 9

    2-in-1 FOXWELL NT301 Plus OBD2 Scanner with 12V Battery Tester, Check Engine Light Code Reader, Car Battery/Starter/Charging System Test, Live Data Diagnostic Tool for 1996+ OBDII Vehicles
    FOXWELL
    8.9
    Very Good

    2-in-1 FOXWELL NT301 Plus OBD2 Scanner with 12V Battery Tester, Check Engine Light Code Reader, Car Battery/Starter/Charging System Test, Live Data Diagnostic Tool for 1996+ OBDII Vehicles

    20% Off
    • is discontinued by manufacturer: No
    • product dimensions: 3.7 x 1.26 x 5.71 inches
    • manufacturer part number: NT301 Plus
    • item weight: 1.32 pounds
    • customer reviews:4.4 4.4 out of 5 stars 1,672 ratings 4.4 out of 5 stars

  • 10

    Stainless Steel Dental TMJ Triangular Ruler Instrument
    Diofox
    8.8
    Very Good

    Stainless Steel Dental TMJ Triangular Ruler Instrument

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