| All Patents in class 33/342 |
Patents 1 -
15
of 44
      |
| Number | Date | Patentee | Title | Type |
| 31,987 | Apr. 09, 1861 | R.B. Light | Machinist's Square | squares |
| 51,767 | Dec. 26, 1865 | S. Whelan | Combination Calipers and Trammels | calipers |
| 101,477 | Apr. 05, 1870 | J.A. Littlefield | Improvement in Combined Square, Protractor, Level, & c. | squares |
| 160,471 | Mar. 02, 1875 | J.J. Robinson | Improvement in Stair-Builders' Rules | measuring rods |
| 282,583 | Aug. 07, 1883 | L.S. Starrett | Beveling Instrument | combination squares |
| 312,743 | Feb. 24, 1885 | B.B. Merrill | Combined Square, Bevel and Level | squares |
| 339,158 | Apr. 06, 1886 | J.A. Finley | Combined square, level, and bevel | bevel squares |
| 342,303 | May 18, 1886 | J. Morrison | Combined Plumb, Level and Rule | plumbs |
| 389,647 | Sep. 18, 1888 | J.A. Traut, G.F. Hall | "Odd Jobs" Layout Tool | rule attachments |
| 414,232 | Nov. 05, 1889 | H. Lowe | Device for Measuring the Height of Horses | levels |
| 445,646 | Feb. 03, 1891 | A.A. Welsh | Carpenter's Gage | marking gauges |
| 498,726 | May 30, 1893 | C.W. Preston | Stock for Surface Gages or Other Implements | surface gauges |
| 504,278 | Aug. 29, 1893 | C.W. Preston | Combination Gage | surface gauges |
| 563,226 | Jun. 30, 1896 | W.D. Gardner | Shaft liner | |
| 569,963 | Oct. 20, 1896 | O. Engman | Combined square, level, and T-square | combination tools |
