Bertrand type refractometer unsigned
1870-1893
Bertrand type refractometer with small bottle of refractive liquid separate, in case, unsigned, French , 1870-1893.
Details
- Category:
- Optics
- Object Number:
- 1893-15
- Materials:
- steel (metal), brass (copper, zinc alloy), glass, wood (unidentified), leather, paper (fibre product) and textile
- Measurements:
-
case: 44 mm x 72 mm x 39 mm,
bottle: 35 mm x 12 mm,
reftactometer: 30 mm x 56 mm x 25 mm,
- type:
- refractometer, instrument case and bottle
- credit:
- Pierrotet, P.
