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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 6896-13 precision measuring tool

    Insize 6896-13 – V-Block Set, 3.9x3.1x3.1IN, Pair

    Insize

    $905.35
    Insize 6896-13 – V-Block Set, 3.9x3
    6896-13
    SKU:
    6896-13
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    20.61 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6896-13
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    A
    EAN:
    6928640320712
    Package Weight:
    20.61 lb
    Package Length:
    8.07 in
    Package Width:
    5.71 in
    Package Height:
    5.12 in
    Feature 1:
    Squareness of both V grooves to front and back sides: 197μin
    Feature 2:
    Hold cylindrical workpieces for inspection and machining.
    Feature 3:
    Two V-blocks per set.
    Feature 4:
    Made of alloy steel.
    Feature 5:
    Hardened to HRC60±2.
    Feature 6:
    V groove on the top for large shafts.
    Feature 7:
    V groove on the bottom for small shafts (except 6896-10).
    $905.35
  • Insize 6896-14 precision measuring tool

    Insize 6896-14 – V-Block Set, 5.5x2.8x5.5IN, Pair

    Insize

    $1,561.80
    Insize 6896-14 – V-Block Set, 5.5x2
    6896-14
    SKU:
    6896-14
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    44.81 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6896-14
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    A
    EAN:
    6928640320866
    Package Weight:
    44.81 lb
    Package Length:
    11.61 in
    Package Width:
    10.83 in
    Package Height:
    8.46 in
    Feature 1:
    Squareness of both V grooves to front and back sides: 197μin
    Feature 2:
    Hold cylindrical workpieces for inspection and machining.
    Feature 3:
    Two V-blocks per set.
    Feature 4:
    Made of alloy steel.
    Feature 5:
    Hardened to HRC60±2.
    Feature 6:
    V groove on the top for large shafts.
    Feature 7:
    V groove on the bottom for small shafts (except 6896-10).
    $1,561.80
  • Insize 6897-1 precision measuring tool

    Insize 6897-1 – Granite V-Block Set, 2.8x2.0x2.8IN, Pair

    Insize

    $726.75
    Insize 6897-1 – Granite V-Block Set
    6897-1
    SKU:
    6897-1
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    4.00 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6897-1
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    B
    EAN:
    6928640320590
    Package Weight:
    4 lb
    Package Length:
    8.66 in
    Package Width:
    5.12 in
    Package Height:
    3.94 in
    Feature 1:
    Two V-blocks per set.
    Feature 2:
    2.8' x 2.0' x 2.8' (LxWxH)
    Feature 3:
    Granite
    $726.75
  • Insize 6897-2 precision measuring tool

    Insize 6897-2 – Granite V-Block Set, 3.9x2.0x2.8IN, Pair

    Insize

    $1,016.50
    Insize 6897-2 – Granite V-Block Set
    6897-2
    SKU:
    6897-2
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    5.47 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6897-2
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    B
    EAN:
    6928640320606
    Package Weight:
    5.47 lb
    Package Length:
    8.66 in
    Package Width:
    5.12 in
    Package Height:
    3.54 in
    Feature 1:
    Two V-blocks per set.
    Feature 2:
    3.9' x 2.0' x 2.8' (LxWxH)
    Feature 3:
    Granite
    $1,016.50
  • Insize 6898-100 precision measuring tool

    Insize 6898-100 – Magnetic Rectangular Blocks, 3.9x2.8x2.8IN, Pair

    Insize

    $1,125.75
    Insize 6898-100 – Magnetic Rectangu
    6898-100
    SKU:
    6898-100
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    18.82 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6898-100
    Product Family:
    Testing and Specialty Instruments
    Supplier Category Code:
    A
    EAN:
    6928640320958
    Package Weight:
    18.82 lb
    Package Length:
    9.45 in
    Package Width:
    9.45 in
    Package Height:
    5.91 in
    Feature 1:
    For grinding, light milling, drilling and inspection of round and square jobs.
    Feature 2:
    Hardened, high accuracy, strong magnetic force.
    Feature 3:
    Working surfaces are hardened to HRC58-62.
    Feature 4:
    Magnetic force on top, bottom and back sides.
    Feature 5:
    Supplied in matched pair.
    $1,125.75
  • Insize 6898-150 precision measuring tool

    Insize 6898-150 – Magnetic Rectangular Blocks, 5.9x2.8x3.3IN, Pair

    Insize

    $1,985.50
    Insize 6898-150 – Magnetic Rectangu
    6898-150
    SKU:
    6898-150
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    33.79 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6898-150
    Product Family:
    Testing and Specialty Instruments
    Supplier Category Code:
    A
    EAN:
    6928640320965
    Package Weight:
    33.79 lb
    Package Length:
    9.84 in
    Package Width:
    9.84 in
    Package Height:
    5.91 in
    Feature 1:
    For grinding, light milling, drilling and inspection of round and square jobs.
    Feature 2:
    Hardened, high accuracy, strong magnetic force.
    Feature 3:
    Working surfaces are hardened to HRC58-62.
    Feature 4:
    Magnetic force on top, bottom and back sides.
    Feature 5:
    Supplied in matched pair.
    $1,985.50
  • Insize 6900-A11 precision measuring tool

    Insize 6900-A11 – Granite Surface Plate, Grade A, 12x18x3IN

    Insize

    $472.15
    Insize 6900-A11 – Granite Surface P
    6900-A11
    SKU:
    6900-A11
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    92.59 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6900-A11
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640359484
    Package Weight:
    92.59 lb
    Package Length:
    21.38 in
    Package Width:
    14.02 in
    Package Height:
    8.66 in
    Feature 1:
    Made of granite, free from deterioration or dimensional change over time,
    Feature 2:
    minimal changes in dimension due to temperature changes. Meet GGG-P-463C.
    Feature 3:
    Optional accessory: stand for granite surface plate (part no. 6902),
    Feature 4:
    jack for granite surface plate (part no. 6903).
    $472.15
  • Insize 6900-A12 precision measuring tool

    Insize 6900-A12 – Granite Surface Plate, Grade A, 18x24x3IN

    Insize

    $803.70
    Insize 6900-A12 – Granite Surface P
    6900-A12
    SKU:
    6900-A12
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    180.78 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6900-A12
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640359491
    Package Weight:
    180.78 lb
    Package Length:
    27.36 in
    Package Width:
    20.08 in
    Package Height:
    8.86 in
    Feature 1:
    Made of granite, free from deterioration or dimensional change over time,
    Feature 2:
    minimal changes in dimension due to temperature changes. Meet GGG-P-463C.
    Feature 3:
    Optional accessory: stand for granite surface plate (part no. 6902),
    Feature 4:
    jack for granite surface plate (part no. 6903).
    $803.70
  • Insize 6900-A23 precision measuring tool

    Insize 6900-A23 – Granite Surface Plate, Grade A, 24x36x4IN

    Insize

    $1,727.10
    Insize 6900-A23 – Granite Surface P
    6900-A23
    SKU:
    6900-A23
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    440.93 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6900-A23
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640359507
    Package Weight:
    440.93 lb
    Package Length:
    39.37 in
    Package Width:
    26.18 in
    Package Height:
    9.65 in
    Feature 1:
    Made of granite, free from deterioration or dimensional change over time,
    Feature 2:
    minimal changes in dimension due to temperature changes. Meet GGG-P-463C.
    Feature 3:
    Optional accessory: stand for granite surface plate (part no. 6902),
    Feature 4:
    jack for granite surface plate (part no. 6903).
    $1,727.10
  • Insize 6900-A34 precision measuring tool

    Insize 6900-A34 – Granite Surface Plate, Grade A, 36x48x6

    Insize

    $4,265.50
    Insize 6900-A34 – Granite Surface P
    6900-A34
    SKU:
    6900-A34
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1,266.56 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6900-A34
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640359514
    Package Weight:
    1266.56 lb
    Package Length:
    52.76 in
    Package Width:
    38.19 in
    Package Height:
    11.42 in
    Feature 1:
    Made of granite, free from deterioration or dimensional change over time,
    Feature 2:
    minimal changes in dimension due to temperature changes. Meet GGG-P-463C.
    Feature 3:
    Optional accessory: stand for granite surface plate (part no. 6902),
    Feature 4:
    jack for granite surface plate (part no. 6903).
    $4,265.50
  • Insize 6902-106A precision measuring tool

    Insize 6902-106A – Stand for Granite Surface Plate

    Insize

    $1,131.45
    Insize 6902-106A – Stand for Granit
    6902-106A
    SKU:
    6902-106A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    116.85 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-106A
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640320422
    Package Weight:
    116.85 lb
    Package Length:
    26.38 in
    Package Width:
    19.69 in
    Package Height:
    11.42 in
    Feature 1:
    H(with granite surface plates), 29.724'-30.709'
    Feature 2:
    h(without granite surface plates), 24.213'-25.197'
    Feature 3:
    For medium size granite surface plates.
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'.
    Feature 6:
    One foot on the bottom is adjustable.
    $1,131.45
  • Insize 6902-106H precision measuring tool

    Insize 6902-106H – Stand for Granite Surface Plate

    Insize

    $1,152.35
    Insize 6902-106H – Stand for Granit
    6902-106H
    SKU:
    6902-106H
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    146.89 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-106H
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640370663
    Package Weight:
    146.89 lb
    Package Length:
    33.46 in
    Package Width:
    19.69 in
    Package Height:
    12.2 in
    Feature 1:
    H(with granite surface plates), 39.370'-40.354'
    Feature 2:
    h(without granite surface plates), 33.858'-34.843'
    Feature 3:
    For medium size granite surface plates
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'
    Feature 6:
    One foot on the bottom is adjustable
    $1,152.35
  • Insize 6902-161A precision measuring tool

    Insize 6902-161A – Stand for Granite Surface Plate

    Insize

    $1,944.65
    Insize 6902-161A – Stand for Granit
    6902-161A
    SKU:
    6902-161A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    165.35 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-161A
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640320453
    Package Weight:
    165.35 lb
    Package Length:
    36.61 in
    Package Width:
    28.74 in
    Package Height:
    13.58 in
    Feature 1:
    H(with granite surface plates), 29.724'-30.709'
    Feature 2:
    h(without granite surface plates), 22.638'-23.622'
    Feature 3:
    For medium size granite surface plates.
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'.
    Feature 6:
    One foot on the bottom is adjustable.
    $1,944.65
  • Insize 6902-161H precision measuring tool

    Insize 6902-161H – Stand for Granite Surface Plate

    Insize

    $2,012.10
    Insize 6902-161H – Stand for Granit
    6902-161H
    SKU:
    6902-161H
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    181.40 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-161H
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640370991
    Package Weight:
    181.4 lb
    Package Length:
    35.04 in
    Package Width:
    28.74 in
    Package Height:
    12.6 in
    Feature 1:
    H(with granite surface plates), 39.370'-40.354'
    Feature 2:
    h(without granite surface plates), 32.283'-33.268'
    Feature 3:
    For medium size granite surface plates
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'
    Feature 6:
    One foot on the bottom is adjustable
    $2,012.10
  • Insize 6902-64A precision measuring tool

    Insize 6902-64A – Stand for Granite Surface Plate

    Insize

    $1,025.05
    Insize 6902-64A – Stand for Granite
    6902-64A
    SKU:
    6902-64A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    98.11 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-64A
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640320392
    Package Weight:
    98.11 lb
    Package Length:
    25.98 in
    Package Width:
    14.76 in
    Package Height:
    11.81 in
    Feature 1:
    H(with granite surface plates), 30.512'-31.496'
    Feature 2:
    h(without granite surface plates), 27.362'-28.346'
    Feature 3:
    For medium size granite surface plates.
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'.
    Feature 6:
    One foot on the bottom is adjustable.
    $1,025.05
  • Insize 6902-64H precision measuring tool

    Insize 6902-64H – Stand for Granite Surface Plate

    Insize

    $1,095.35
    Insize 6902-64H – Stand for Granite
    6902-64H
    SKU:
    6902-64H
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    134.48 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-64H
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640361647
    Package Weight:
    134.48 lb
    Package Length:
    35.83 in
    Package Width:
    14.57 in
    Package Height:
    12.6 in
    Feature 1:
    H(with granite surface plates), 39.370'-40.354'
    Feature 2:
    h(without granite surface plates), 36.220'-37.205'
    Feature 3:
    For medium size granite surface plates
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'
    Feature 6:
    One foot on the bottom is adjustable
    $1,095.35
  • Insize 6902-85A precision measuring tool

    Insize 6902-85A – Stand for Granite Surface Plate

    Insize

    $1,094.40
    Insize 6902-85A – Stand for Granite
    6902-85A
    SKU:
    6902-85A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    113.54 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-85A
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640320415
    Package Weight:
    113.54 lb
    Package Length:
    24.8 in
    Package Width:
    16.54 in
    Package Height:
    12.2 in
    Feature 1:
    H(with granite surface plates), 30.512'-31.496'
    Feature 2:
    h(without granite surface plates), 26.575'-27.559'
    Feature 3:
    For medium size granite surface plates.
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'.
    Feature 6:
    One foot on the bottom is adjustable.
    $1,094.40
  • Insize 6902-85H precision measuring tool

    Insize 6902-85H – Stand for Granite Surface Plate

    Insize

    $1,149.50
    Insize 6902-85H – Stand for Granite
    6902-85H
    SKU:
    6902-85H
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    138.01 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6902-85H
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    B
    EAN:
    6928640370960
    Package Weight:
    138.01 lb
    Package Length:
    35.43 in
    Package Width:
    16.93 in
    Package Height:
    12.6 in
    Feature 1:
    H(with granite surface plates), 39.370'-40.354'
    Feature 2:
    h(without granite surface plates), 35.433'-36.417'
    Feature 3:
    For medium size granite surface plates
    Feature 4:
    5 jacks are included
    Feature 5:
    Adjusting range of jacks: 1'
    Feature 6:
    One foot on the bottom is adjustable
    $1,149.50
  • Insize 6903-B precision measuring tool

    Insize 6903-B – Jack Set for Granite Surface Plate

    Insize

    $2,898.45
    Insize 6903-B – Jack Set for Granit
    6903-B
    SKU:
    6903-B
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    260.15 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6903-B
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    B
    EAN:
    6928640320460
    Package Weight:
    260.15 lb
    Package Length:
    33.07 in
    Package Width:
    21.85 in
    Package Height:
    24.8 in
    Feature 1:
    5 jacks per set.
    Feature 2:
    Adjustable height.
    Feature 3:
    For large granite surface plates over 6.5ft.
    $2,898.45
  • Insize 6990-300A precision measuring tool

    Insize 6990-300A – Height Scriber

    Insize

    $81.89
    Insize 6990-300A – Height Scriber
    6990-300A
    SKU:
    6990-300A
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.94 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    6990-300A
    Product Family:
    Stands, Holders, and Accessories
    Supplier Category Code:
    A
    EAN:
    6928640320057
    Package Weight:
    2.94 lb
    Package Length:
    18.5 in
    Package Width:
    3.35 in
    Package Height:
    2.76 in
    Feature 1:
    Grooved bottom for cylinder.
    Feature 2:
    Two pins to be set against the edge of surface plate.
    Feature 3:
    12' tall, base is 1.063' tall, Used for layout
    $81.89