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    System of Measurement
    System of Measurement
    Inch
    Metric
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    click to learn more about
    Adjustment Method
    Adjustment Method
    Knurled Nut
    Screw
    Knurled Center Wheel
    Maximum Opening
    Maximum Opening
    3"
    4"
    6"
    8"
    10"
    12"
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    Manufacturer Model Number
    Manufacturer Model Number
    243-6
    274-3
    274-6
    275-3
    275-6
    277-3
    277-6
    C251A
    C251B
    C251C
    Numeric Increments
    Numeric Increments
    1"
    1 cm
    Graduation Location
    Graduation Location
    Bottom
    Top
    Graduation Marks
    Graduation Marks
    32nds
    Millimeters
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
    Minimum Circle Diameter
    Minimum Circle Diameter
    1 1/2"
    7"
    Beam Length
    Beam Length
    10 1/2"
    12"
    14 1/2"
    20"
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