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Scientific instruments

The foundation’s collection not only includes microscopes but also scientific instruments such as refractometers, microscope illuminators, microscopical slides, and microtomes. Besides historical microscopes, the foundation is focussed on Nedoptifa/Bleeker; a Dutch company that produced several scientific instruments including microscopes during the 20th century. We have chosen to categorize optical devices (e.g. the prism rotator or Zeiss’ camera lucida) as scientific instruments.

Ah description of all instruments is not yet available, but we are constantly trying to improve our website and to supplement data and descriptions.

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Box with microscopical preparations

NBS

1850-1960

Hand microtome with razor blade

UNKNOWN

1850-1900

Hemoglobin meter

REICHERT

1870-1880

Microtome after De Groot

KAGENAAR

1880-1890

Preparation table

UNKNOWN

1880-1930

Paraffin oven

UNKNOWN

1880-1930

Sledge microtome

JUNG

ca. 1882

Rocking microtome

CAMBRIDGE SCIENTIFIC INSTRUMENTS COMPANY

1886

Butter refractometer after Wolney

ZEISS

ca. 1891

Swinging microtome

UNKNOWN

1900-1930

Prism rotator after Greenough

ZEISS

1900-1920

Microtome after Minot

LEITZ

1900-1940

Microtome knives

VARIOUS

1900-1960

Microtome knives

JUNG

1900-1960

Two boxes with microscopical slides

1900-1960

Additional microscope parts

ZEISS

ca. 1900

Drawing prism after Abbe

ZEISS

ca. 1910

Swing microtome

LEITZ

1910-1940

Swing microtome

SARTORIUS

1910-1930

Swing microtome

SARTORIUS

1910-1930

Methylated spirit burner

UNKNOWN

1910-1930

Microtome after Minot

POULENC FRÈRES

ca. 1920

Box with stains for microscopical slides

UNKNOWN

ca. 1920

Microscope illuminator

ZEISS

ca. 1925

Drawing prism

ZEISS

ca. 1925

Polarimeter after Laurent

WINKEL

1928-1940

Resistance decade

BLEEKER

1935-1978

Transformer

BLEEKER

1935-1945

Microscope illuminator, type ‘Beech’

LEITZ

ca. 1935

Microscope illuminator, type ‘Beech’

LEITZ

ca. 1935

Cardioid condenser after Siedentopf

ZEISS

ca. 1935

Drawing prism

SEIBERT

ca. 1935

Achromatic magnifier 8×

BLEEKER

1940-1955

Technical compensator, type 2165

BLEEKER

1948

Universal refractometer after Abbe

BLEEKER

1950-1955

Achromatic magnifier 10×

BLEEKER

1950-1960

Universal refractometer after Abbe

BLEEKER

1950-1960

Microscope illuminator

BLEEKER

1950-1960

Technical compensator, type 2169

BLEEKER

1950-1960

Porro prism binocular

BLEEKER

ca. 1950

Porro prism binocular 6×30

BLEEKER

ca. 1950

Refractometer or Saccharimeter

BLEEKER

1950-1960

Refractometer or Saccharimeter opened

BLEEKER

1950-1960

Technical compensator

BLEEKER

ca. 1955

Technical compensator, type 2169

BLEEKER

ca. 1955

Resistance decade

BLEEKER

ca. 1955

Normal element compensator

BLEEKER

ca. 1955

Fiber measurement device

BLEEKER

1955-1965

Drawing prism

BLEEKER

ca. 1960

Microscope tube with vertical illuminator and objective revolver

BLEEKER

1960

Stains for microscopical slides

VARIOUS

ca. 1960

Spectroscope

BLEEKER

ca. 1960

Microscope illuminator

CAMBRIDGE SCIENTIFIC INSTRUMENTS COMPANY

ca. 1960

Microscope camera, type Werra

ZEISS

1960-1965

Microscope illuminator

AMERICAN OPTICAL CORPORATION

ca. 1970

Three plan apochromat objectives

ZEISS

1975-1990