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Precision Measuring

Precision Measuring

Insize Precision Measuring & Inspection Tools

Authorized Insize distributor  |  Ships direct from Insize  |  Quote reply same day  |  Tool + accessory in one order: save 5%

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 3241-100 precision measuring tool

    Insize 3241-100 – Depth Micrometer, 0-100MM, Graduation 0.01MM, Base 101.5×17MM

    Insize

    $227.69
    Insize 3241-100 – Depth Micrometer,
    3241-100
    SKU:
    3241-100
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.75 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-100
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640303715
    Package Weight:
    1.75 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Meet DIN863-2
    Feature 2:
    Micrometer head accuracy: +/-3μm.
    Feature 3:
    Rod accuracy: +/-(2+L/75)μm, L is the measuring range in mm.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $227.69
  • Insize 3241-12 precision measuring tool

    Insize 3241-12 – Depth Micrometer, 0-12IN, Base 3.996×.669IN

    Insize

    $447.45
    Insize 3241-12 – Depth Micrometer,
    3241-12
    SKU:
    3241-12
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    4.31 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-12
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640326752
    Package Weight:
    4.31 lb
    Package Length:
    17.72 in
    Package Width:
    11.42 in
    Package Height:
    2.36 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $447.45
  • Insize 3241-2 precision measuring tool

    Insize 3241-2 – Depth Micrometer, 0-2IN, Base 3.996×.669IN

    Insize

    $185.25
    Insize 3241-2 – Depth Micrometer, 0
    3241-2
    SKU:
    3241-2
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.70 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-2
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355400
    Package Weight:
    1.7 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $185.25
  • Insize 3241-3 precision measuring tool

    Insize 3241-3 – Depth Micrometer, 0-3IN, Base 3.996×.669IN

    Insize

    $214.70
    Insize 3241-3 – Depth Micrometer, 0
    3241-3
    SKU:
    3241-3
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.71 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-3
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355417
    Package Weight:
    1.71 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $214.70
  • Insize 3241-4 precision measuring tool

    Insize 3241-4 – Depth Micrometer, 0-4IN, Base 3.996×.669IN

    Insize

    $235.60
    Insize 3241-4 – Depth Micrometer, 0
    3241-4
    SKU:
    3241-4
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.78 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-4
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640326738
    Package Weight:
    1.78 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $235.60
  • Insize 3241-6 precision measuring tool

    Insize 3241-6 – Depth Micrometer, 0-6IN, Base 3.996×.669IN

    Insize

    $285.95
    Insize 3241-6 – Depth Micrometer, 0
    3241-6
    SKU:
    3241-6
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.60 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-6
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640326745
    Package Weight:
    2.6 lb
    Package Length:
    13.31 in
    Package Width:
    7.91 in
    Package Height:
    1.73 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $285.95
  • Insize 3241-8 precision measuring tool

    Insize 3241-8 – Depth Micrometer, 0-8IN, Base 3.996×.669IN

    Insize

    $369.55
    Insize 3241-8 – Depth Micrometer, 0
    3241-8
    SKU:
    3241-8
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.72 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-8
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355424
    Package Weight:
    2.72 lb
    Package Length:
    13.31 in
    Package Width:
    7.91 in
    Package Height:
    1.73 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $369.55
  • Insize 3241-B1 precision measuring tool

    Insize 3241-B1 – Depth Micrometer, 0-1IN, Base 2.480×.669IN

    Insize

    $142.50
    Insize 3241-B1 – Depth Micrometer,
    3241-B1
    SKU:
    3241-B1
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.53 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-B1
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640326769
    Package Weight:
    1.53 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $142.50
  • Insize 3241-B4 precision measuring tool

    Insize 3241-B4 – Depth Micrometer, 0-4IN, Base 2.480×.669IN

    Insize

    $226.10
    Insize 3241-B4 – Depth Micrometer,
    3241-B4
    SKU:
    3241-B4
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3241-B4
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640326776
    Package Weight:
    1.66 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Graduation: .001'.
    Feature 2:
    Micrometer head accuracy: ±.00012'.
    Feature 3:
    Rod accuracy: ±[.001+.0005(L/3)]', L is the measuring range in inch.
    Feature 4:
    Rods with flat end.
    Feature 5:
    Ratchet stop.
    $226.10
  • Insize 3260-1 precision measuring tool

    Insize 3260-1 – Spherical Anvil Tube Micrometer, Type A, 0-1IN

    Insize

    $86.55
    Insize 3260-1 – Spherical Anvil Tub
    3260-1
    SKU:
    3260-1
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.75 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-1
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327810
    Package Weight:
    0.75 lb
    Package Length:
    6.34 in
    Package Width:
    3.7 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $86.55
  • Insize 3260-1S precision measuring tool

    Insize 3260-1S – Spherical Anvil Tube Micrometer, Type B, 0-1IN

    Insize

    $94.15
    Insize 3260-1S – Spherical Anvil Tu
    3260-1S
    SKU:
    3260-1S
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.78 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-1S
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327827
    Package Weight:
    0.78 lb
    Package Length:
    6.34 in
    Package Width:
    3.7 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $94.15
  • Insize 3260-2 precision measuring tool

    Insize 3260-2 – Spherical Anvil Tube Micrometer, Type A, 1-2IN

    Insize

    $110.20
    Insize 3260-2 – Spherical Anvil Tub
    3260-2
    SKU:
    3260-2
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.16 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-2
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327834
    Package Weight:
    1.16 lb
    Package Length:
    7.72 in
    Package Width:
    4.33 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $110.20
  • Insize 3260-2S precision measuring tool

    Insize 3260-2S – Spherical Anvil Tube Micrometer, Type B, 1-2IN

    Insize

    $125.40
    Insize 3260-2S – Spherical Anvil Tu
    3260-2S
    SKU:
    3260-2S
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.10 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-2S
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355882
    Package Weight:
    1.1 lb
    Package Length:
    7.72 in
    Package Width:
    4.33 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $125.40
  • Insize 3260-3 precision measuring tool

    Insize 3260-3 – Spherical Anvil Tube Micrometer, Type A, 2-3IN

    Insize

    $175.75
    Insize 3260-3 – Spherical Anvil Tub
    3260-3
    SKU:
    3260-3
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.46 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-3
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327841
    Package Weight:
    1.46 lb
    Package Length:
    8.66 in
    Package Width:
    4.8 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $175.75
  • Insize 3260-3S precision measuring tool

    Insize 3260-3S – Spherical Anvil Tube Micrometer, Type B, 2-3IN

    Insize

    $202.35
    Insize 3260-3S – Spherical Anvil Tu
    3260-3S
    SKU:
    3260-3S
    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:
    3260-3S
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355899
    Package Weight:
    1.44 lb
    Package Length:
    8.66 in
    Package Width:
    4.8 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $202.35
  • Insize 3260-4 precision measuring tool

    Insize 3260-4 – Spherical Anvil Tube Micrometer, Type A, 3-4IN

    Insize

    $234.65
    Insize 3260-4 – Spherical Anvil Tub
    3260-4
    SKU:
    3260-4
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.90 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-4
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355875
    Package Weight:
    1.9 lb
    Package Length:
    9.88 in
    Package Width:
    5.67 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $234.65
  • Insize 3260-4S precision measuring tool

    Insize 3260-4S – Spherical Anvil Tube Micrometer, Type B, 3-4IN

    Insize

    $240.35
    Insize 3260-4S – Spherical Anvil Tu
    3260-4S
    SKU:
    3260-4S
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.91 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3260-4S
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640355905
    Package Weight:
    1.91 lb
    Package Length:
    9.88 in
    Package Width:
    5.67 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide measuring faces.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $240.35
  • Insize 3261-1 precision measuring tool

    Insize 3261-1 – Cylindrical Anvil Tube Micrometer, Type A, 0-1IN

    Insize

    $100.70
    Insize 3261-1 – Cylindrical Anvil T
    3261-1
    SKU:
    3261-1
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.74 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3261-1
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327858
    Package Weight:
    0.74 lb
    Package Length:
    6.34 in
    Package Width:
    3.7 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation: .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide spindle tip.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $100.70
  • Insize 3261-1B precision measuring tool

    Insize 3261-1B – Cylindrical Anvil Tube Micrometer, Type B, 0-1IN

    Insize

    $121.60
    Insize 3261-1B – Cylindrical Anvil
    3261-1B
    SKU:
    3261-1B
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.77 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3261-1B
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327865
    Package Weight:
    0.77 lb
    Package Length:
    6.34 in
    Package Width:
    3.7 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation: .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide spindle tip.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $121.60
  • Insize 3261-1C precision measuring tool

    Insize 3261-1C – Cylindrical Anvil Tube Micrometer, Type C, 0-1IN

    Insize

    $121.60
    Insize 3261-1C – Cylindrical Anvil
    3261-1C
    SKU:
    3261-1C
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.75 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3261-1C
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640327872
    Package Weight:
    0.75 lb
    Package Length:
    6.34 in
    Package Width:
    3.7 in
    Package Height:
    1.26 in
    Feature 1:
    Graduation: .0001'.
    Feature 2:
    Measure wall thickness of tubes.
    Feature 3:
    Ratchet stop.
    Feature 4:
    Carbide spindle tip.
    Feature 5:
    Supplied with setting standards (except 0-1').
    $121.60