Year/Period |
1900-1930 |
Maker |
BUSCH |
Country |
Germany |
Signature |
Busch |
Category |
Other optical equipment |
Subcategory |
Magnifying glasses |
Size of the instrument (h x w x d) |
2.8 × 4.5 × 2.5 cm (folded); ø lens 2.5 cm |
Donated by |
R. Ketting, Vlaardingen, The Netherlands |
Inventory number |
SM 509 |
Metal folding pocket magnifier with an 8× magnification.
Busch logo on the front; INS: engraved on the back.
The magnifying glass has been donated to the foundation by Mr. R. Ketting and comes from the legacy of his uncle who worked at TNO Utrecht.
Hemoglobin meter
REICHERT
1870-1880
Achromatic magnifier 8×
BLEEKER
1940-1955
Universal refractometer after Abbe
BLEEKER
1950-1960
Polarimeter after Laurent
WINKEL
1928-1940