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Summit Racing™ Dial Bore Gauges

These Summit Racing™ dial bore gauges allow precise 3-point measurements of bores to within .0005 in. accuracy. They feature a range capacity of 2 in. to 6 in., and have a depth capacity of up to 6 in. for checking bore tapers.

4.17 out of 5 stars ( 47 )

$114.99

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$190.99

Summit Racing™ Precision Measurement Tools and Fixtures

Summit Racing™ precision measurement tools and fixtures are designed for engine building professionals looking for value. Gauging accuracy, action, and repeatability are the key to building a good engine that holds together. When you get serious about your engine-building, our Summit™ tools are the ones you can trust.

3.67 out of 5 stars ( 3 )

$412.99

Chicago Brand Telescoping Bore Gauges

Telescoping gauges are used to gauge large holes and to measure inside distances. These gauges are equipped with a plunger that can be locked in the measuring position by a knurled screw or locking nut in the end of the handle. Measurements must be calipered on the gauge by a micrometer. They are also used when measurements cannot be taken with a standard micrometer. Telescoping gauges are particularly adaptable for roughly bored work and odd sizes and shapes of holes.

4.5 out of 5 stars ( 20 )

$28.79

Sonnax Bore Sizing Tools

Sonnax bore sizing tools are used to check bore diameters after boring and honing. Each bore sizing tool can be used in conjunction with Sonnax's valve body modification kits. Sonnax precisely machines each bore sizing tool to ensure the tightest tolerances.

1.0 out of 5 stars ( 1 )

$49.99

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$88.99

Chicago Brand Small Hole Bore Gauges

Precision takes on a whole new meaning when working with steel or on engines. Chicago Brand small hole bore gauges are designed to measure the dimensions of slots, grooves, and small holes from 1/8 to 1/2 in. diameter. Just slide the ball end into a slot or hole, turn the screw in the handle while wiggling it to the size, pull it out, and measure with an outside micrometer. When every fraction of an inch counts, you will obtain the correct measurements with Chicago Brand Industrial small hole bore gauges.

4.0 out of 5 stars ( 1 )

$31.79

Chicago Brand Dial Bore Gauges

Chicago Brand dial bore gauges are designed to measure specific bore diameters to within .0005 in. accuracy using their unique self-centering measurement head. They feature hardened measurements tips and ball end anvils to promote increased accuracy. These gauges include a wood storage case, instructions, and a chart and are the perfect instruments for fast easy sets and gauging.

4.25 out of 5 stars ( 8 )

$99.99

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$105.99