Year/Period |
1950-1960 |
Maker |
BLEEKER |
Country |
The Netherlands |
Signature |
SM 256.1: HASTRO / f=9mm / NOI [in logo] |
Category |
Accessories microscopy |
Subcategory |
Optical components |
Optical 1 |
Compound |
Size of the instrument (h x w x d) |
Length 4.2 × diameter 2.8 cm |
Donated by |
P.P. de Bruijn, Zeist, the Netherlands |
Inventory number |
SM 256 |
Six eyepieces for use in the astronomy, one Kastro and five Hastro.
Optical data:
| Eyepiece | f = 7 mm | f = 9 mm | f = 12.5 mm | f = 18 mm | f = 25 mm |
| Diameter lens 1 (mm) | 4 | 3.5 | 4.5 | 5 | 6 |
| Diameter lens 2 (mm) | 6 | 8 | 10 | 17 | 26 |
| Distance between lenses (cm) | 1.0 | 1.3 | 1.3 | 2.5 | 2.8 |
| Diameter eyepiece (cm) | 2.8 | ||||
| Length eyepiece (cm) | 4.2 | ||||
Achromatic objective lens, type F
ZEISS
1910-1920
Paraffin oven
UNKNOWN
1900-1920
Lenses and prisms
BLEEKER
ca. 1950
Folding condenser
ZEISS
1950-1970
info@stichtinghistorischemicroscopie.nl
Visseringlaan 25
2288 ER Rijswijk
The Netherlands
RSIN: 804217361
KVK: 41182753
IBAN: NL53INGB0007728414
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