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Precision Measuring

Precision Measuring

Insize Precision Measuring & Inspection Tools

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L. DeWitt McCarter is an authorized Insize distributor. This department carries the Insize 2026 US line — hand measuring tools, gage blocks and thread gages, and inspection equipment from microscopes to hardness and torque testers — each listed under its Insize part number. Have the part number? Type it in the search bar (for example 1108-150) to land on the exact tool. Otherwise, pick a category below.

Hand Measuring Tools

Gages, Standards & Layout

Inspection & Test Equipment

Optical & Video InspectionMicroscopes, magnifiers, profile projectors, vision measuring systems, borescopes and videoscopes.Surface Roughness & Coating ThicknessRoughness testers and probes, roughness specimens, coating thickness gages.Ultrasonic Thickness & Flaw DetectionUltrasonic thickness gages, transducers, couplant and flaw detector.Hardness Testers & Test BlocksLeeb, Rockwell, Brinell, Vickers and Shore testers, durometers and certified test blocks.Force & Material TestingForce gages, spring testers, tension gages, test stands, universal testing machines, metallography.Torque Wrenches & TestersDigital, dial and preset torque wrenches, torque testers, multipliers and heads.Weights & ScalesCalibration weights and weight sets (classes E2, F1, F2, M1), weighing, counting and crane scales.Testing & Specialty InstrumentsSound, light, moisture, temperature and humidity meters, tachometers, multimeters, gloss meters.

Setup, Data & Accessories

Choosing the right tool

If you need to…Start withShop
Check an outside diameter or length at the machineDigital caliper, then an outside micrometer for tighter toleranceCalipers · Micrometers
Measure a bore or internal diameterThree-point internal micrometer, dial bore gage or telescoping gageBore & Inside Measurement
Check runout, flatness or alignmentDial or digital indicator on a magnetic stand; dial test indicator for tight spotsIndicators & Test Indicators · Stands, Holders & Accessories
Accept or reject a threaded partGO and NO GO thread ring or plug gages; 3-wires for pitch diameterThread Gages & Thread Measurement
Calibrate or zero your own toolsGage blocks, setting rings, micrometer setting standards, pin gagesGage Blocks, Pins & Setting Standards
Inspect small features without contactMeasuring microscope, profile projector or vision measuring systemOptical & Video Inspection

Before you order

  • Insize ranges are listed in inch and metric; most digital tools switch between the two.
  • ISO 17025 calibration certificates are available as separate part numbers on the 1108 digital calipers, 1311 dial calipers and 2307 dial indicators (CAL suffix), and on request for those series. Gage blocks, thread gages, setting rings and other standards list a manufacturer inspection certificate where Insize supplies one.
  • Wireless (WL) tools need a receiver; data-output tools need the matching cable. Both are under Data Collection & Wireless.
Need help choosing or a volume price?
Send the Insize part number or the size you need to measure and the quantity — we reply the same day. (210) 494-1997 · [email protected]
Request a Quote
  • Insize 3127-E7 precision measuring tool

    Insize 3127-E7 – Digital Three Points Internal Micrometer, IP65, 6-7IN/152-178MM

    Insize

    $1,922.80
    Insize 3127-E7 – Digital Three Poin
    3127-E7
    SKU:
    3127-E7
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    7.29 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3127-E7
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356421
    Package Weight:
    7.29 lb
    Package Length:
    12.8 in
    Package Width:
    9.45 in
    Package Height:
    6.69 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP65 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Ratchet stop.
    Feature 7:
    Optional accessary: data output cable, setting ring (part no. 6313), micrometer stand and clamp (part no. 6301 and 6301-2).
    $1,922.80
  • Insize 3127-E8 precision measuring tool

    Insize 3127-E8 – Digital Three Points Internal Micrometer, IP65, 7-8IN/178-203MM

    Insize

    $2,243.90
    Insize 3127-E8 – Digital Three Poin
    3127-E8
    SKU:
    3127-E8
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    7.07 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3127-E8
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356438
    Package Weight:
    7.07 lb
    Package Length:
    12.2 in
    Package Width:
    9.45 in
    Package Height:
    6.5 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP65 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Ratchet stop.
    Feature 7:
    Optional accessary: data output cable, setting ring (part no. 6313), micrometer stand and clamp (part no. 6301 and 6301-2).
    $2,243.90
  • Insize 3127-E9 precision measuring tool

    Insize 3127-E9 – Digital Three Points Internal Micrometer, IP65, 8-9IN/203-228MM

    Insize

    $2,609.65
    Insize 3127-E9 – Digital Three Poin
    3127-E9
    SKU:
    3127-E9
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    8.16 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3127-E9
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356445
    Package Weight:
    8.16 lb
    Package Length:
    12.2 in
    Package Width:
    9.45 in
    Package Height:
    6.5 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP65 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Ratchet stop.
    Feature 7:
    Optional accessary: data output cable, setting ring (part no. 6313), micrometer stand and clamp (part no. 6301 and 6301-2).
    $2,609.65
  • Insize 3128-10 precision measuring tool

    Insize 3128-10 – Digital Wide Range Three Points Internal Micrometer, IP54, 6-10IN/152-254MM

    Insize

    $5,169.90
    Insize 3128-10 – Digital Wide Range
    3128-10
    SKU:
    3128-10
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    25.28 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3128-10
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356698
    Package Weight:
    25.28 lb
    Package Length:
    22.44 in
    Package Width:
    14.17 in
    Package Height:
    11.22 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP54 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output. LR44 battery, automatic power off.
    Feature 5:
    Carbide measuring faces. Ratchet stop.
    Feature 6:
    Supplied with extension rods.
    Feature 7:
    Setting rings are included (except part no. 3128-12).
    Feature 8:
    Optional accessory: data output cable.
    $5,169.90
  • Insize 3128-12 precision measuring tool

    Insize 3128-12 – Digital Wide Range Three Points Internal Micrometer, IP54, 8-12IN/203-305MM

    Insize

    $7,214.30
    Insize 3128-12 – Digital Wide Range
    3128-12
    SKU:
    3128-12
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    7.92 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3128-12
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356704
    Package Weight:
    7.92 lb
    Package Length:
    13.98 in
    Package Width:
    9.45 in
    Package Height:
    7.68 in
    Feature 1:
    Resolution .0001'/0.001mm.
    Feature 2:
    IP54 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output. LR44 battery, automatic power off.
    Feature 5:
    Carbide measuring faces. Ratchet stop.
    Feature 6:
    Supplied with extension rods.
    Feature 7:
    Setting rings are included (except part no. 3128-12).
    Feature 8:
    Optional accessory: data output cable.
    $7,214.30
  • Insize 3128-28 precision measuring tool

    Insize 3128-28 – Digital Wide Range Three Points Internal Micrometer, IP54, 2-2.8IN/51-71MM

    Insize

    $1,154.25
    Insize 3128-28 – Digital Wide Range
    3128-28
    SKU:
    3128-28
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    6.05 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3128-28
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356667
    Package Weight:
    6.05 lb
    Package Length:
    11.42 in
    Package Width:
    9.84 in
    Package Height:
    4.33 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP54 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output. LR44 battery, automatic power off.
    Feature 5:
    Carbide measuring faces. Ratchet stop.
    Feature 6:
    Supplied with extension rods.
    Feature 7:
    Setting rings are included (except part no. 3128-12).
    Feature 8:
    Optional accessory: data output cable.
    $1,154.25
  • Insize 3128-4 precision measuring tool

    Insize 3128-4 – Digital Wide Range Three Points Internal Micrometer, IP54, 2.8-4IN/71-101MM

    Insize

    $1,536.15
    Insize 3128-4 – Digital Wide Range
    3128-4
    SKU:
    3128-4
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    6.82 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3128-4
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356674
    Package Weight:
    6.82 lb
    Package Length:
    12.99 in
    Package Width:
    11.42 in
    Package Height:
    3.94 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP54 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output. LR44 battery, automatic power off.
    Feature 5:
    Carbide measuring faces. Ratchet stop.
    Feature 6:
    Supplied with extension rods.
    Feature 7:
    Setting rings are included (except part no. 3128-12).
    Feature 8:
    Optional accessory: data output cable.
    $1,536.15
  • Insize 3128-6 precision measuring tool

    Insize 3128-6 – Digital Wide Range Three Points Internal Micrometer, IP54, 4-6IN/101-152MM

    Insize

    $2,565.95
    Insize 3128-6 – Digital Wide Range
    3128-6
    SKU:
    3128-6
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    11.84 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3128-6
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356681
    Package Weight:
    11.84 lb
    Package Length:
    14.96 in
    Package Width:
    10.63 in
    Package Height:
    4.72 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    IP54 dust/waterproof.
    Feature 3:
    Buttons: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output. LR44 battery, automatic power off.
    Feature 5:
    Carbide measuring faces. Ratchet stop.
    Feature 6:
    Supplied with extension rods.
    Feature 7:
    Setting rings are included (except part no. 3128-12).
    Feature 8:
    Optional accessory: data output cable.
    $2,565.95
  • Insize 3202-1 – Outside Micrometer, 0-1IN, Graduation .0001IN

    Insize 3202-1 – Outside Micrometer, 0-1IN, Graduation .0001IN

    Insize

    $62.10
    Insize 3202-1 – Outside Micrometer,
    3202-1
    SKU:
    3202-1
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.69 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3202-1
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640360916
    Package Weight:
    0.6945 lb
    Package Length:
    6.3386 in
    Package Width:
    3.7008 in
    Package Height:
    1.2598 in
    Feature 1:
    Carbide measuring faces.
    Feature 2:
    Meet DIN863-1
    Feature 3:
    Supplied with setting standards (except 0-25mm).
    $62.10
  • Insize 3203-1004A precision measuring tool

    Insize 3203-1004A – Outside Micrometer, 0-100MM

    Insize

    $223.25
    Insize 3203-1004A – Outside Microme
    3203-1004A
    SKU:
    3203-1004A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    4.63 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-1004A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640304156
    Package Weight:
    4.63 lb
    Package Length:
    17.32 in
    Package Width:
    11.22 in
    Package Height:
    2.28 in
    Feature 1:
    Graduation 0.01mm
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-25mm).
    $223.25
  • Insize 3203-100A precision measuring tool

    Insize 3203-100A – Outside Micrometer, 75-100MM

    Insize

    $71.73
    Insize 3203-100A – Outside Micromet
    3203-100A
    SKU:
    3203-100A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.44 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-100A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640304057
    Package Weight:
    1.44 lb
    Package Length:
    9.88 in
    Package Width:
    5.67 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation 0.01mm
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-25mm).
    $71.73
  • Insize 3203-10A precision measuring tool

    Insize 3203-10A – Outside Micrometer, 9-10IN

    Insize

    $156.75
    Insize 3203-10A – Outside Micromete
    3203-10A
    SKU:
    3203-10A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    4.65 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-10A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327162
    Package Weight:
    4.65 lb
    Package Length:
    17.32 in
    Package Width:
    11.22 in
    Package Height:
    2.28 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-1').
    $156.75
  • Insize 3203-11A precision measuring tool

    Insize 3203-11A – Outside Micrometer, 10-11IN

    Insize

    $180.50
    Insize 3203-11A – Outside Micromete
    3203-11A
    SKU:
    3203-11A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    5.69 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-11A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327179
    Package Weight:
    5.69 lb
    Package Length:
    21.26 in
    Package Width:
    12.8 in
    Package Height:
    2.36 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-1').
    $180.50
  • Insize 3203-1212A precision measuring tool

    Insize 3203-1212A – Outside Micrometer Set with Case, 0-12IN

    Insize

    $1,231.30
    Insize 3203-1212A – Outside Microme
    3203-1212A
    SKU:
    3203-1212A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    28.21 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-1212A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327230
    Package Weight:
    28.21 lb
    Package Length:
    20.08 in
    Package Width:
    13.98 in
    Package Height:
    12.01 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-1').
    $1,231.30
  • Insize 3203-125A precision measuring tool

    Insize 3203-125A – Outside Micrometer, 100-125MM

    Insize

    $93.29
    Insize 3203-125A – Outside Micromet
    3203-125A
    SKU:
    3203-125A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.19 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-125A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640304064
    Package Weight:
    2.19 lb
    Package Length:
    12.09 in
    Package Width:
    6.97 in
    Package Height:
    1.73 in
    Feature 1:
    Graduation 0.01mm
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-25mm).
    $93.29
  • Insize 3203-126A precision measuring tool

    Insize 3203-126A – Outside Micrometer Set with Case, 6-12IN

    Insize

    $863.71
    Insize 3203-126A – Outside Micromet
    3203-126A
    SKU:
    3203-126A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    21.98 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-126A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327223
    Package Weight:
    21.98 lb
    Package Length:
    19.09 in
    Package Width:
    10.83 in
    Package Height:
    12.01 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-1').
    $863.71
  • Insize 3203-12A precision measuring tool

    Insize 3203-12A – Outside Micrometer, 11-12IN

    Insize

    $192.85
    Insize 3203-12A – Outside Micromete
    3203-12A
    SKU:
    3203-12A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    6.01 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-12A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327186
    Package Weight:
    6.01 lb
    Package Length:
    21.26 in
    Package Width:
    12.8 in
    Package Height:
    2.36 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-1').
    $192.85
  • Insize 3203-1506A precision measuring tool

    Insize 3203-1506A – Outside Micrometer, 0-150MM

    Insize

    $388.55
    Insize 3203-1506A – Outside Microme
    3203-1506A
    SKU:
    3203-1506A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    7.95 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-1506A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640304163
    Package Weight:
    7.95 lb
    Package Length:
    21.26 in
    Package Width:
    12.8 in
    Package Height:
    2.36 in
    Feature 1:
    Graduation 0.01mm
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-25mm).
    $388.55
  • Insize 3203-150A precision measuring tool

    Insize 3203-150A – Outside Micrometer, 125-150MM

    Insize

    $105.45
    Insize 3203-150A – Outside Micromet
    3203-150A
    SKU:
    3203-150A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.38 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-150A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640304071
    Package Weight:
    2.38 lb
    Package Length:
    12.09 in
    Package Width:
    6.97 in
    Package Height:
    1.73 in
    Feature 1:
    Graduation 0.01mm
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-25mm).
    $105.45
  • Insize 3203-175A precision measuring tool

    Insize 3203-175A – Outside Micrometer, 150-175MM

    Insize

    $118.75
    Insize 3203-175A – Outside Micromet
    3203-175A
    SKU:
    3203-175A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    3.06 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3203-175A
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640304088
    Package Weight:
    3.06 lb
    Package Length:
    13.31 in
    Package Width:
    7.91 in
    Package Height:
    1.73 in
    Feature 1:
    Graduation 0.01mm
    Feature 2:
    Carbide measuring faces.
    Feature 3:
    Ratchet stop type
    Feature 4:
    Supplied with setting standards (except 0-25mm).
    $118.75