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    1 Product

    Starrett Small-Bore Gauge Sets

    Image of Product. Half-Ball Gauge Set. Front orientation. Contains Inset. Bore Gauges. Starrett Small-Bore Gauge Sets, Half-Ball.

    Half-Ball Gauge Set

    Check a variety of hole, groove, and slot diameters. Each gauge in these sets has a different measuring range. The end of these gauges has a 360° contact surface that’s easier to center in tight spaces than anvils or spring-loaded contacts. Use them to measure slots and bores in precision parts, such as electronics, where small size deviations can cause inefficiencies.
    Insert the probe into a bore and turn the knob on the handle to expand the contacts. To find the bore diameter, use a micrometer to measure the distance across the contacts.
    Half-Ball—Half-ball gauges are best for measuring near the bottom of flat, shallow bores.
    Distance Measured
    Range
    Material
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    Gauges
    Includes
    Mfr. Model
    No.
    Each
    Half-Ball Small Bore
    0.125" to 0.5"Steel
    		4One half-ball gauge with 0.125"-0.200" measuring range and 2" max. depth
    One half-ball gauge with 0.200"-0.300" measuring range and 3" max. depth
    One half-ball gauge with 0.300"-0.400" measuring range and 3" max. depth
    One half-ball gauge with 0.400"-0.500" measuring range and 3" max. depth    		S831EZ2205A50000000
    4 Piece Starrett Half Ball Small-Bore Gauge Set
    EachIn stock
     
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