7004-212 Lot of three micrometer calipers. Two by BROWNE & SHARPE, a No. 12 in its original wooden box, marked with two 1927 patents, and a No. 10,. Marked with the date for Spaulding's 1902 patent. Plus one by TUBULAR MICROMETER CO. of St. James, MN, with original instruction sheet. Fine 150 - 250 (MAG223-225)