1996/026
Watts 6.5 in micrometer transit theodolite
c.1953
Watts 6.5 in micrometer transit theodolite with internal scales micrometer eyepiece reading to 1 second of arc. 3-screw levelling head. Used for measuring horizontal and vertical angles; and horizontal distances in land surveying (by measuring the intercept of a pair of stadia wires on a levelling staff); and for setting out works.
ER Watts & Son Ltd merged with Adam Hilger Ltd to form Hilger & Watts in 1948, but continued to produce instruments under the Watts name.
| Acquisition Number | 1996/026 |
|---|---|
| Item Type | |
| Short Description | Watts micrometer theodolite |
| Manufactured by | |
| Date of Manufacture | c.1953 |
| Sub-items | Metal box and plumb line |
| Supporting Items | None |
| Makers Number | 85277 |
| Marks | "No 85277/WATTS/LONDON/MADE IN ENGLAND/PAT No 574295". "T1" stenciled in white on top of box cover. |
| Dimensions (mm) | 270 x 210 x 170 (box) |
| Donor | |
| Date Donated | June 1996 |
| Materials | Green enamelled steel |
| Condition | Good |
| Display Location |
