McMaster-Carr logo
    Filter by
    System of Measurement
    Blade Material
    Blade Width
    Case Material
    Diameter Graduations
    Numeric Graduations
    Blade Return Type
    Graduation Type
    Measurement System
    Measurement Precision
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Retractable
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    54 Products

    Diameter-Measuring Tape Measures

    Wrap around duct, pipe, and other cylindrical objects to find their diameter without complex calculations. These tape measures are ideal for already mounted objects since you don't need to take your system apart. Also known as tree tapes.
    Standard Scale
    Image of Product. Front orientation. Tape Measures. Diameter-Measuring Tape Measures, Standard Scale.
    Take math out of the equation completely. After wrapping the blade around an object, find the number that overlaps with zero—that's your diameter.
    Automatic Blade Return Type—The blade zips back into the case when you let go.
    Manual Blade Return Type—Guide the blade back by hand or using the wheel on the side of the case.
    Nonlocking Blade Lock—Pull the blade out and hold it in place between your fingers. These free-moving tape measures are best for taking frequent, small measurements.
    Coated Steel Blade—A coating on the blade prevents the graduations from wearing or scratching off.
    Chrome-Plated Steel Blade—Our most durable blades. The hard chrome plating guards them from scratches, wear, and rust.
    Dia.
    Blade
    Measured
    Graduations
    Lg.
    Graduations
    Numeric
    Graduations
    Wd.
    Material
    Lock Type
    Tip Style
    Each
    Automatic Blade Return Type
    7" to 120"1/10"50 ft.1/8"1", 1 ft.3/8"Coated SteelNonlockingLoop
    5504N11000000
     
    Manual Blade Return Type
    0" to 45", 0 cm to 116 cm1/100", 1 mm12 ft./3.5 m1/16", 1 mm1", 1 cm1/2"Coated SteelManualLoop
    4867N1100000
    2" to 76"1/10"20 ft.1/100", 1/10"1", 1 ft.3/8"Chrome-Plated SteelNonlockingPointed Hook
    6832A62000000
    2" to 76"1"20 ft.1/16"1"3/8"Coated SteelNonlockingLoop
    6832A64000000
     
    Vernier Scale with Calibration Certificate
    Image of Product. Front orientation. Tape Measures. Diameter-Measuring Tape Measures, Vernier Scale.
    Our most precise diameter-measuring tape measures. Wind the blade around your object until the top scale aligns with the bottom vernier scale, then add the values together to find your diameter. These tape measures include a calibration certificate traceable to NIST, so you can be confident your measurements are correct and consistent.
    Stainless Steel Blade—The choice for outdoor and wet environments, these blades won't rust if rinsed or rained on.
    Blue Blade—White markings pop against the blue background, so you can read these tape measures in dimly lit areas.
    Blue Blade
    Silver Blade
    Dia. Measured
    Numeric
    Graduations
    Measurement
    Precision
    Wd.
    Tip
    Style
    Each
    Each
     
    Steel Blade
    3/4" to 7"1"0.001"1/2"Knob
    1982A61100000001982A210000000
    2" to 12"1"0.001"1/2"Knob
    1982A6120000001982A22000000
    2" to 24"1"0.001"1/2"Knob
    1982A6130000001982A23000000
    12" to 24"1"0.001"1/2"Knob
    1982A6140000001982A24000000
    12" to 36"1"0.001"1/2"Knob
    1982A6150000001982A25000000
    24" to 36"1"0.001"1/2"Knob
    1982A6160000001982A26000000
    24" to 48"1"0.001"1/2"Knob
    1982A6170000001982A27000000
    36" to 48"1"0.001"1/2"Knob
    1982A6180000001982A28000000
    48" to 60"1"0.001"1/2"Knob
    1982A6190000001982A29000000
    60" to 72"1"0.001"1/2"Knob
    1982A6210000001982A31000000
    72" to 84"1"0.001"1/2"Knob
    1982A6220000001982A32000000
    84" to 96"1"0.001"1/2"Knob
    1982A6230000001982A33000000
    96" to 108"1"0.001"1/2"Knob
    1982A6240000001982A34000000
    108" to 120"1"0.001"1/2"Knob
    1982A6250000001982A35000000
    100 mm to 300 mm1 cm0.01 mm1/2"Knob
    1982A6310000001982A11000000
    300 mm to 600 mm1 cm0.01 mm1/2"Knob
    1982A6320000001982A12000000
     
    Stainless Steel Blade
    3/4" to 7"1"0.001"1/2"Knob
    ———01982A41000000
    2" to 12"1"0.001"1/2"Knob
    ———01982A42000000
    2" to 24"1"0.001"1/2"Knob
    ———01982A44000000
    12" to 24"1"0.001"1/2"Knob
    ———01982A43000000
    12" to 36"1"0.001"1/2"Knob
    ———01982A45000000
    24" to 36"1"0.001"1/2"Knob
    ———01982A451000000
    24" to 48"1"0.001"1/2"Knob
    ———01982A46000000
    36" to 48"1"0.001"1/2"Knob
    ———01982A461000000
    48" to 60"1"0.001"1/2"Knob
    ———01982A47000000
    60" to 72"1"0.001"1/2"Knob
    ———01982A48000000
    72" to 84"1"0.001"1/2"Knob
    ———01982A49000000
    84" to 96"1"0.001"1/2"Knob
    ———01982A51000000
    96" to 108"1"0.001"1/2"Knob
    ———01982A52000000
    108" to 120"1"0.001"1/2"Knob
    ———01982A53000000
     

    Pocket Diameter-Measuring Tape Measures

    Image of ProductInUse. Front orientation. Tape Measures. Pocket Diameter-Measuring Tape Measures.
    Image of Product. Front orientation. Tape Measures. Pocket Diameter-Measuring Tape Measures.
    For quick diameter measurements on the go, these tape measures are as small as a pack of gum to tuck into your pocket. There's no math involved—just wrap the blade around your cable, pipe, or other cylindrical object. The number that overlaps with zero is your diameter. These tape measures are ideal for already mounted objects since you don't need to take your system apart. Also known as tree tapes.
    Automatic Blade Return Type—The blade zips back into the case when you let go.
    Nonlocking Blade Lock—Pull the blade out and hold it in place between your fingers. These free-moving tape measures are best for taking frequent, small measurements.
    Chrome-Plated Metal Case—Choose metal cases for your toughest industrial jobs, from construction to machining. These cases resist breaking due to hard hits and drops. However, they're heavier to carry around than plastic cases.
    Dia.
    Blade
    Case
    Measured
    Graduations
    Lg.
    Graduations
    First Foot
    Graduations
    Numeric
    Graduations
    Tip
    Style
    Wd.
    Material
    Lock Type
    Material
    Color
    Each
    Automatic Blade Return Type
    0" to 24"1/100", 1 mm6 ft./2 m1/16", 1 mm1/32"1", 1 cmHook
    1/4"Coated SteelNonlockingPlasticBlack6822A101000000
    1/4" to 23"1/100"6 ft.1/16"1/32"1"Loop
    1/4"Coated SteelNonlockingChrome-Plated MetalSilver6822A1200000
    1/4" to 23"1/64"6 ft.1/16"1/32"1"Loop
    1/4"Coated SteelNonlockingChrome-Plated MetalSilver6822A1700000
    5 mm to 635 mm1 mm2 m1 mm1 cmLoop
    1/4"Coated SteelNonlockingChrome-Plated MetalSilver6822A1300000
     
    back to top