| All Patents in class 33/501 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
 | 61,926 | Feb. 12, 1867 | J.S. Copeland | Screw Gage |
 | 196,976 | Nov. 13, 1877 | H.W. Hill | Gage for Handling and Distributing Paper, Circulars, &c. |
| | 362,816 | May 10, 1887 | G.W. Burchard | Scale for Indicating the Butter Value of Milk and Cream |
 | 586,441 | Jul. 13, 1897 | H.T. Kingsbury | Rim-spacing machine |
| | 746,622 | Dec. 08, 1903 | A.J. Wold | Slip and Shrinkage Gage |
 | 759,512 | May 10, 1904 | H. Frahm | Method of Measuring the Revolutions of Rotating Shafts |
 | 1,017,639 | Feb. 13, 1912 | E.C. Mershon | Gage for straight-edges |
 | 1,107,276 | Aug. 18, 1914 | H.P. Farrington | Combination Tool |
| | 1,512,823 | Oct. 21, 1924 | P.J. Darlington | Micrometer Caliper |
 | 2,052,153 | Aug. 25, 1936 | H.H. Willis | Spherometer |
