Starrett S579HZ Telescoping Gage Set

Starrett S579HZ Telescoping Gage Set is a six‑piece, self‑centering internal measurement kit that covers a 5/16 in to 6 in (8–150 mm) range. The set’s six gages, labeled A through F, expand inside bores, lock in place, and allow transfer readings with a micrometer or caliper for quick, repeatable hole diameter checks. Each gage features a handle length ranging from 2-3/8 in to 3-1/4 in (60–82 mm) and the set comes in a protective case for organized, portable use. This S579HZ configuration belongs to Starrett’s 579 Series Telescoping Gage Sets, designed for precision inspection in machining, manufacturing, and repair where internal dimensions must be verified against drawings or tolerances.