McMaster-Carr logo
    Shape
    Shape
    Half Round
    Round
    System of Measurement
    System of Measurement
    Inch
    Arm Length
    Arm Length
    default
    4 1/2"
    6"
    8"
    12"
    17"
    18"
    21"
    36"
    Maximum Angle Measuring
    Maximum Angle Measuring
    180°
    220°
    270°
    360°
    120'
    Graduation Marks
    Graduation Marks
    1/2°
    5'
    Numeric Increments
    Numeric Increments
    0.1°
    10°
    30'
    Diameter
    Diameter
    3"
    4"
    5"
    6"
    8"
    Graduation Mark Style
    Graduation Mark Style
    Etched
    Printed
    Minimum Angle Measuring
    Minimum Angle Measuring
    0'
    Head Shape
    Head Shape
    Rectangular
    Half Round
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    Number of Arms
    Number of Arms
    1
    2
    Graduation Color
    Graduation Color
    Black
    Head Width
    Head Width
    3 1/4"
    3 3/8"
    Bevel Angle
    Bevel Angle
    45°
    60°
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    Ruler System of Measurement
    Ruler System of Measurement
    Inch
    Metric
    Manufacturer Model Number
    Manufacturer Model Number
    187-904
    C19
    C183
    C493B
    Manufacturer
    Manufacturer
    Mitutoyo
    Starrett
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
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    35 Products