Description
Starrett 81320 Repeat Reading Gage. This high-precision instrument provides a fast check on surface plate repeatability with readings taken on a high magnification electronic amplifier. This gage detects local error, not overall flatness. The base has an adjustment knob for zero-setting the cartridge-type gaging head, and all contact points resting on the granite, including the contact point of the gaging cartridge, are carbide and lapped to a fine finish. The instrument also accommodates AGD indicators with .375" (9.5mm) diameter stems. Extra-length contact points may be required.
