JC3102 Feeler Gauge
Range(mm/inch):0.004/0.006-0.025/0.27inch (0.102/0.152-0.635/0.686mm).
Hardened spring steel blades, chrome plated case with big lock nut.
Size in mm and inch on each blade.
22 hardened Tempered steel blades.
Called “GO-NO-GO” feller gauge.