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Telescoping Gage Set, 4-Piece 5/16 - 2-1/8", Starrett

Telescoping Gage Set, 4-Piece 5/16 - 2-1/8", Starrett - Main image
$123.99 $199.99 In stock

Starrett telescoping gages are used for determining the true size of holes, slots, and recesses up to 2-1/8" (54 mm). The ends of both contacts are hardened and ground to a radius to allow proper clearance on the smallest hole the gage will enter. These tools must be slightly "rocked" in the hole being measured to ensure that the tool is on the proper diameter before it is locked and withdrawn. The final hole size is obtained by measuring over the gage contacts with a micrometer.

The No. 579 Series telescoping gages have handles that are rigidly attached to the contact plungers and are automatically self-centering. Also, the No. 579 gages have two telescoping contacts.

The handles are approximately 2-3/8" (60 mm) long.

Constant spring tension gives uniform contact pressure and both plungers are easily locked at any desired setting.

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Customer Reviews (4.6 / 5 · 5 reviews)

Evelyn M. ★★★★★

I was pleasantly surprised by how smoothly the telescoping contacts slide and lock; it made measuring a tricky 1-1/2" slot dead simple. The hardened ends really feel durable, and the set covers all the sizes I need for engine work.

Joshua H. ★★★★★

The ground radius on the contacts let me get a much more accurate reading on a tight slot than my old set ever did. Worked perfectly for measuring a few bearing housings right out of the box.

Nicholas M. ★★★★★

The hardened, ground-radius contacts on these gages slipped perfectly into a tight valve guide hole without any binding. Measuring that 1.250" recess came out spot-on to the tenth.