JPG (JAPAN PRECISION GAUGE) THREAD PLUG GAUGE GO/NO GO
Code : 4H GPNP, 5H GPNP, 6H GPNP, 7H GPNP, GP1IP1, GP1WP!, GP2IP2, GP2WP2, GP3IP3, GP3WP3
JPG (JAPAN PRECISION GAUGE) THREAD RING GAUGE GO/NO GO
Code : 6g GRNR, 5g6g GRNR, 4h GRNR, 5h GRNR, 8g GRNR, GR1WR1, GR1IR1, GR2WR2, GR2IR2, GR3WR3, GR3IR3 , 5g GRNR
