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Year/Period
1955-1965
Maker
Country
The Netherlands
Signature
Unsigned
Category
Other optical equipment
Subcategory
Thread counters
Donated by
P.P. de Bruijn, Zeist, the Netherlands
Inventory number
SM 146
See also SM 217.
Spectroscope
BLEEKER
ca. 1960
Polarimeter after Laurent
WINKEL
1928-1940
Achromatic magnifier 12× and 10×
1940-1947
Universal refractometer after Abbe
1950-1960