Year/Period |
1950-1960 |
Maker |
BLEEKER |
Country |
The Netherlands |
Signature |
(1): CURTIS . SYSTEMS // BLEEKER / HOLLAND // NOI [in logo] / No 45 / 67503 |
Category |
Other optical equipment |
Subcategory |
Refractometers |
Inventory number |
SM 79 |
For information on the color and number of the rings see refractometer color codes (in Dutch).
To see the inside of this instrument we refer to SM 168.
Universal refractometer after Abbe
BLEEKER
1950-1960
Spectroscope
ZEISS
1930-1940
Trial lens kit
ONBEKEND/UNKNOWN
ca. 1900
Porro prism binocular 6×30
BLEEKER
ca. 1950