Lufkin Intside Caliper Toolmakers' 5 Inch No. 142
This is a good old used 5" spring inside caliper(6.8" long overall). Nice design, in fine condition with no owner's marks, no rust, no damage, works fine, good threads on the fine adjustment. It is clearly marked "The LUFKIN RULE CO. SAGINAW MICH MADE IN U.S.A.". Like new!