... auxiliary accessories to improve its universal applications. Applications:1. Shaft, hole, plug gauge, ring gauge, clip gauge, length bar, cone, ... thread, thread, thread ring gauge, thread plug gauge. ♥ Dial indicator inspection♥ External micrometer inspection♥ Gauge block checking♥ Internal micrometer measurement♥ Plug gauge measurement♥ Plug gauge measurement / Snap gauge measurement♥ Ring gauge ...