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| All Patents in class 33/355R | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,669X | Mar. 06, 1835 | J. Ball | Compass | surveyor | |
| 186,638 | Jan. 23, 1877 | W. Thomson | Compass needle combines ultra-low friction with high polar moment of inertia. | ||
| 682,585 | Sep. 10, 1901 | J.W. Gardam, H.D. Cotter | Dipping-needle compass | ||