Mahogany case for double image micrometer H.O.4
Mahogany case for double image micrometer H.O.4
Slit-lens, double image micrometer telescope H.O.4, in mahogany case with two brass keys and a reading lens, one key clamps to end of rod for separating the half lenses, telescope 2' 7 1/8" long when closed, diam. 2 11/ 16" at each end, leather covered draw tube engraved No. 32 Micrometre Lugeol par Colombi brevete Brest, silvered carriers at O.G. end "GGB No.32, Brest 1851, scales on silver nod 0 to 5 each way subdivided to 12 parts, 30 verniers
Parts
Micrometer, double image H.O.4
Micrometer, double image H.O.4, two brass keys and a reading lens, one key clamps to end of rod for separating the half lenses, telescope 2' 7 1/8" long when closed, diam. 2 11/ 16" at each end, leather covered draw tube engraved No. 32 Micrometre Lugeol par Colombi brevete Brest, silvered carriers at O.G. end "GGB No.32, Brest 1851, scales on silver nod 0 to 5 each way subdivided to 12 parts, 30 verniers
- Measurements:
-
overall: 90 x 850 x 190 mm
- Object Number:
- 1911-232 Pt2
- type:
- instrument component and micrometer telescope
- Image ©
- The Board of Trustees of the Science Museum
