Rtj Ring Groove Digital Calipers with 23 Degree Conical Points-Newly Designed - China Rtj Ring Groove Vernier Caliper, Ring Joint Caliper | Made-in-China.com
Dyer 103 Series Direct Reading O-Ring/Groove Gage 1.6" to 2.4" Range - 103-105-1 - Penn Tool Co., Inc