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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 2274-4 precision measuring tool

    Insize 2274-4 – Combination Square Set, 0.5MM, 1/32IN and 1MM, 1/64IN

    Insize

    $224.20
    Insize 2274-4 – Combination Square
    2274-4
    SKU:
    2274-4
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    3.31 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2274-4
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6940561966015
    Package Weight:
    3.31 lb
    Package Length:
    12.99 in
    Package Width:
    6.69 in
    Package Height:
    2.36 in
    Feature 1:
    Optional accessory: rigid rule
    $224.20
  • Insize 2276-300 precision measuring tool

    Insize 2276-300 – Combination Square

    Insize

    $23.75
    Insize 2276-300 – Combination Squar
    2276-300
    SKU:
    2276-300
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.70 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2276-300
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640376450
    Package Weight:
    0.7 lb
    Package Length:
    13.39 in
    Package Width:
    6.1 in
    Package Height:
    0.98 in
    Feature 1:
    Square head (made of zinc): set the blade at 90° or 45° to an edge of a workpiece accuracy: ±0.5°
    Feature 2:
    Blade (made of stainless steel): range: 12'/300mm, graduation: 1/32' and 1mm on front ace, 1/16' and 1mm on back face
    $23.75
  • Insize 2277-2 precision measuring tool

    Insize 2277-2 – Double Square, 6IN

    Insize

    $47.98
    Insize 2277-2 – Double Square, 6IN<
    2277-2
    SKU:
    2277-2
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.41 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2277-2
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640374838
    Package Weight:
    0.41 lb
    Package Length:
    8.27 in
    Package Width:
    3.94 in
    Package Height:
    0.94 in
    Feature 1:
    Graduation 1/8', 1/16',1/32',1/64'
    Feature 2:
    Accuracy: ±2min for 90° square
    Feature 3:
    Hardened and chrome plated blade
    $47.98
  • Insize 2278-180 precision measuring tool

    Insize 2278-180 – Combination Square Set, Inch/Metric, 4 Piece Set, 12IN/300MM

    Insize

    $208.05
    Insize 2278-180 – Combination Squar
    2278-180
    SKU:
    2278-180
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    3.25 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2278-180
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640317545
    Package Weight:
    3.25 lb
    Package Length:
    12.99 in
    Package Width:
    6.69 in
    Package Height:
    2.36 in
    Feature 1:
    graduation 1/32', 0.5mm, 1/64', 1mm
    Feature 2:
    Center head: locate center of cylinder with diameter (d): 1.181' DIA-3.937' DIA
    Feature 3:
    Accuracy:±.006'.
    Feature 4:
    Protractor head: To set the blade at desired angle to an edge of a workpiece, and can be used to measure angles Range: 0-180° Accuracy: ±7min.
    Feature 5:
    Square head: To set the blade at 90° or 45° to an edge of a workpiece.
    Feature 6:
    Accuracy: ±8min for 90°square, ±10min for 45° square.
    $208.05
  • Insize 2278-180E precision measuring tool

    Insize 2278-180E – Combination Square Set, Inch, 4 Piece Set, 12IN

    Insize

    $206.15
    Insize 2278-180E – Combination Squa
    2278-180E
    SKU:
    2278-180E
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    3.32 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2278-180E
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640329937
    Package Weight:
    3.32 lb
    Package Length:
    12.99 in
    Package Width:
    6.69 in
    Package Height:
    2.36 in
    Feature 1:
    graduation 1/8', 1/16', 1/32', 1/64'
    Feature 2:
    Center head: locate center of cylinder with diameter (d): 1.181' DIA-3.937' DIA
    Feature 3:
    Accuracy:±.006'.
    Feature 4:
    Protractor head: To set the blade at desired angle to an edge of a workpiece, and can be used to measure angles Range: 0-180° Accuracy: ±7min.
    Feature 5:
    Square head: To set the blade at 90° or 45° to an edge of a workpiece.
    Feature 6:
    Accuracy: ±8min for 90°square, ±10min for 45° square.
    $206.15
  • Insize 2278-2 precision measuring tool

    Insize 2278-2 – Combination Square Set, Inch/Metric, 2-Piece Set

    Insize

    $79.90
    Insize 2278-2 – Combination Square
    2278-2
    SKU:
    2278-2
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.94 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2278-2
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640382963
    Package Weight:
    1.94 lb
    Package Length:
    12.99 in
    Package Width:
    6.5 in
    Package Height:
    2.52 in
    Feature 1:
    graduation 1/32', 0.5mm, 1/64', 1mm
    Feature 2:
    Center head: locate center of cylinder with diameter (d): 1.181' DIA-3.937' DIA
    Feature 3:
    Accuracy:±.006'.
    Feature 4:
    Protractor head: To set the blade at desired angle to an edge of a workpiece, and can be used to measure angles Range: 0-180° Accuracy: ±7min.
    Feature 5:
    Square head: To set the blade at 90° or 45° to an edge of a workpiece.
    Feature 6:
    Accuracy: ±8min for 90°square, ±10min for 45° square.
    $79.90
  • Insize 2278-2E precision measuring tool

    Insize 2278-2E – Combination Square Set, Inch, 2-Piece Set

    Insize

    $76.10
    Insize 2278-2E – Combination Square
    2278-2E
    SKU:
    2278-2E
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.00 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2278-2E
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640383021
    Package Weight:
    2 lb
    Package Length:
    12.99 in
    Package Width:
    6.3 in
    Package Height:
    2.36 in
    Feature 1:
    graduation 1/8', 1/16', 1/32', 1/64'
    Feature 2:
    Center head: locate center of cylinder with diameter (d): 1.181' DIA-3.937' DIA
    Feature 3:
    Accuracy:±.006'.
    Feature 4:
    Protractor head: To set the blade at desired angle to an edge of a workpiece, and can be used to measure angles Range: 0-180° Accuracy: ±7min.
    Feature 5:
    Square head: To set the blade at 90° or 45° to an edge of a workpiece.
    Feature 6:
    Accuracy: ±8min for 90°square, ±10min for 45° square.
    $76.10
  • Insize 2278-3 precision measuring tool

    Insize 2278-3 – Combination Square Set, Inch/Metric, 3-Piece Set

    Insize

    $119.70
    Insize 2278-3 – Combination Square
    2278-3
    SKU:
    2278-3
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.33 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2278-3
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640382970
    Package Weight:
    2.33 lb
    Package Length:
    11.85 in
    Package Width:
    5.91 in
    Package Height:
    2.28 in
    Feature 1:
    graduation 1/32', 0.5mm, 1/64', 1mm
    Feature 2:
    Center head: locate center of cylinder with diameter (d): 1.181' DIA-3.937' DIA
    Feature 3:
    Accuracy:±.006'.
    Feature 4:
    Protractor head: To set the blade at desired angle to an edge of a workpiece, and can be used to measure angles Range: 0-180° Accuracy: ±7min.
    Feature 5:
    Square head: To set the blade at 90° or 45° to an edge of a workpiece.
    Feature 6:
    Accuracy: ±8min for 90°square, ±10min for 45° square.
    $119.70
  • Insize 2278-3E precision measuring tool

    Insize 2278-3E – Combination Square Set, Inch, 3-Piece Set

    Insize

    $110.20
    Insize 2278-3E – Combination Square
    2278-3E
    SKU:
    2278-3E
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.28 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2278-3E
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6928640383038
    Package Weight:
    2.28 lb
    Package Length:
    12.99 in
    Package Width:
    6.3 in
    Package Height:
    2.36 in
    Feature 1:
    graduation 1/8', 1/16', 1/32', 1/64'
    Feature 2:
    Center head: locate center of cylinder with diameter (d): 1.181' DIA-3.937' DIA
    Feature 3:
    Accuracy:±.006'.
    Feature 4:
    Protractor head: To set the blade at desired angle to an edge of a workpiece, and can be used to measure angles Range: 0-180° Accuracy: ±7min.
    Feature 5:
    Square head: To set the blade at 90° or 45° to an edge of a workpiece.
    Feature 6:
    Accuracy: ±8min for 90°square, ±10min for 45° square.
    $110.20
  • Insize 2280-300 precision measuring tool

    Insize 2280-300 – Try Square, 11.8×5.9IN

    Insize

    $49.31
    Insize 2280-300 – Try Square, 11.8×
    2280-300
    SKU:
    2280-300
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2280-300
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6974029775185
    Package Weight:
    0.66 lb
    Package Length:
    6.69 in
    Package Width:
    11.81 in
    Package Height:
    0.55 in
    Feature 1:
    Graduation 1mm
    Feature 2:
    Aluminum blade and base
    Feature 3:
    4 milled surfaces
    Feature 4:
    Retractable metal ledge support
    Feature 5:
    Etchings and holes for beveling and framing: 10°, 15°, 22.5°, 30°, 45°, 50° and 60°
    Feature 6:
    Etchings and holes every cm for fluid pencil marking
    $49.31
  • Insize 2281-360 precision measuring tool

    Insize 2281-360 – T-Bevel, Angle Mark 15°, 30°, 45°, 60°, 90°

    Insize

    $27.55
    Insize 2281-360 – T-Bevel, Angle Ma
    2281-360
    SKU:
    2281-360
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2281-360
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6974029775192
    Package Weight:
    0.66 lb
    Package Length:
    11.02 in
    Package Width:
    1.97 in
    Package Height:
    1.18 in
    Feature 1:
    Accuracy of angle ±1°
    Feature 2:
    Easy-to-read vial
    Feature 3:
    The blade can move and can be locked by the clamping screw
    Feature 4:
    Stainless steel blade
    Feature 5:
    Tough rubber handle
    Feature 6:
    Centimeter/inch graduations
    $27.55
  • Insize 2282-180 precision measuring tool

    Insize 2282-180 – Angle Square, 7×7.3IN

    Insize

    $13.21
    Insize 2282-180 – Angle Square, 7×7
    2282-180
    SKU:
    2282-180
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2282-180
    Product Family:
    Squares, Levels, and Angle Measurement
    Supplier Category Code:
    A
    EAN:
    6974029775208
    Package Weight:
    0.66 lb
    Package Length:
    7.87 in
    Package Width:
    7.87 in
    Package Height:
    0.79 in
    Feature 1:
    Accuracy of angle ±0.3°
    Feature 2:
    Length range 0-7', graduation 1/8'
    Feature 3:
    Angle range 0-90°, graduation 1°
    $13.21
  • Insize 2301-10F precision measuring tool

    Insize 2301-10F – Dial Indicator, Flat Back, 10MM, Graduation 0.01MM

    Insize

    $47.22
    Insize 2301-10F – Dial Indicator, F
    2301-10F
    SKU:
    2301-10F
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.55 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2301-10F
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640348006
    Package Weight:
    0.55 lb
    Package Length:
    5.39 in
    Package Width:
    3.43 in
    Package Height:
    2.28 in
    Feature 1:
    Jeweled bearing.
    Feature 2:
    Supplied with limit hands and bezel clamp.
    Feature 3:
    Packed in carton box.
    Feature 4:
    Optional accessory: backs, contact points.
    $47.22
  • Insize 2304-01 precision measuring tool

    Insize 2304-01 – Compact Dial Indicator, Lug Back, .1IN

    Insize

    $60.33
    Insize 2304-01 – Compact Dial Indic
    2304-01
    SKU:
    2304-01
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.67 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-01
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640329517
    Package Weight:
    0.67 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    2.64 in
    Feature 1:
    Graduation .001'
    Feature 2:
    Meet ASME B89.1.10M-2001.
    Feature 3:
    Supplied with limit pointers and bezel clamp.
    Feature 4:
    Optional accessory: backs, contact points.
    $60.33
  • Insize 2304-015 precision measuring tool

    Insize 2304-015 – Compact Dial Indicator, Lug Back, .1IN

    Insize

    $72.20
    Insize 2304-015 – Compact Dial Indi
    2304-015
    SKU:
    2304-015
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.67 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-015
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640329548
    Package Weight:
    0.67 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    2.64 in
    Feature 1:
    Graduation .0005'
    Feature 2:
    Meet ASME B89.1.10M-2001.
    Feature 3:
    Supplied with limit pointers and bezel clamp.
    Feature 4:
    Optional accessory: backs, contact points.
    $72.20
  • Insize 2304-02 precision measuring tool

    Insize 2304-02 – Compact Dial Indicator, Lug Back, .2IN

    Insize

    $61.56
    Insize 2304-02 – Compact Dial Indic
    2304-02
    SKU:
    2304-02
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-02
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640329524
    Package Weight:
    0.66 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    2.64 in
    Feature 1:
    Graduation .001'
    Feature 2:
    Meet ASME B89.1.10M-2001.
    Feature 3:
    Supplied with limit pointers and bezel clamp.
    Feature 4:
    Optional accessory: backs, contact points.
    $61.56
  • Insize 2304-0205 precision measuring tool

    Insize 2304-0205 – Compact Dial Indicator, Lug Back, .2IN

    Insize

    $72.20
    Insize 2304-0205 – Compact Dial Ind
    2304-0205
    SKU:
    2304-0205
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-0205
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640329555
    Package Weight:
    0.66 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    2.64 in
    Feature 1:
    Graduation .0005'
    Feature 2:
    Meet ASME B89.1.10M-2001.
    Feature 3:
    Supplied with limit pointers and bezel clamp.
    Feature 4:
    Optional accessory: backs, contact points.
    $72.20
  • Insize 2304-025 precision measuring tool

    Insize 2304-025 – Compact Dial Indicator, Lug Back, .25IN

    Insize

    $60.33
    Insize 2304-025 – Compact Dial Indi
    2304-025
    SKU:
    2304-025
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-025
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640329531
    Package Weight:
    0.66 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    2.64 in
    Feature 1:
    Graduation .001'
    Feature 2:
    Meet ASME B89.1.10M-2001.
    Feature 3:
    Supplied with limit pointers and bezel clamp.
    Feature 4:
    Optional accessory: backs, contact points.
    $60.33
  • Insize 2304-0255 precision measuring tool

    Insize 2304-0255 – Compact Dial Indicator, Lug Back, .25IN

    Insize

    $72.20
    Insize 2304-0255 – Compact Dial Ind
    2304-0255
    SKU:
    2304-0255
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.66 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-0255
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6928640329562
    Package Weight:
    0.66 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    2.64 in
    Feature 1:
    Graduation .0005'
    Feature 2:
    Meet ASME B89.1.10M-2001.
    Feature 3:
    Supplied with limit pointers and bezel clamp.
    Feature 4:
    Optional accessory: backs, contact points.
    $72.20
  • Insize 2304-02F – Compact Type Dial Indicator, Flat Back

    Insize 2304-02F – Compact Type Dial Indicator, Flat Back

    Insize

    $73.15
    Insize 2304-02F – Compact Type Dial
    2304-02F
    SKU:
    2304-02F
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.88 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    2304-02F
    Product Family:
    Indicators and Test Indicators
    Supplier Category Code:
    A
    EAN:
    6940561936926
    Package Weight:
    0.88 lb
    Package Length:
    6.1 in
    Package Width:
    3.82 in
    Package Height:
    1.65 in
    $73.15