Description:
- Object ID: ALSA 2007.05.01
- Made by: W. & L. E. Gurley, Troy, NY
- Model: Unknown.
- Serial Number: Unknown.
- Date Made: Unknown.
- Approximate size: Unknown.
- Accessories: wooden case, see commentary below.
- Condition: good
Commentary:
Etched on top of the Alidade’s base plate: (MANUFACTURER) “W. & L. E. GURLEY TROY, N. Y., USA 512054”. Other numbers etched on top of the Alidade’s base plate. “999-111-168P” and “G.51-60”
Extra removable parts:
01. The striding level has a storage location in the carrying case.
02. The sun shade for the lens and the lens cover have the same storage location in the carrying case.
03. The right-angle prism eye piece and the eye piece cover have the same storage location in the carrying case.
04. The two adjusting pins are in their designated holes in the carrying case.
05. The small screwdriver is also in its own location inside the carrying case.
06. The small vial of oil is in a hollow in the carrying case.
Source of Object: Unknown.
Notes: The Society has only one in their collection.
References: Visit article The Survey Instrument Captain Cook Wanted to Learn – The Plane Table and Alidade for additional information.
Description by: Entered by Ed Titanich on December 23, 2024.