Spencer no. 44 laboratory compound microscope
Date: circa 1930
Inventory Number: 1359
Classification: Microscope
Subject:
Maker: Spencer Lens Company (1895 - 1945)
Inventor: Ernst Abbe (1840 - 1905)
Owner: Elso S. Barghoorn (1915 - 1984)
User: Gray Herbarium (founded 1842)
Cultural Region:
Place of Origin:
Dimensions:
3.5 × 17.8 × 10.5 cm (1 3/8 × 7 × 4 1/8 in.)
Accessories: ocular: 12x; Spencer objectives (4) on quad nosepiece: 32, 16, 4, 1.8 mm; 30 degree prism on tube; Abbe condenser
Description:
This is a Spencer no. 44 laboratory compound microscope. It has a curved arm which extends almost to the heel of the horseshoe-shaped base. Both the arm and the base are blackened and made of cast iron. The monocular body is equipped with an angled eyepiece and a quadruple revolving nosepiece. There is rack and pinion for the coarse focus and a micrometer screw for the fine focus. The focus knobs are chrome-plated.
This microscope has a rectangular Bakelite stage. The substage apparatus consists of a rack focusing condenser mount fitted with a condenser with an iris diaphragm and a slot for filters. The mount also has a slot for a plug-in mirror (not included).
This microscope has a rectangular Bakelite stage. The substage apparatus consists of a rack focusing condenser mount fitted with a condenser with an iris diaphragm and a slot for filters. The mount also has a slot for a plug-in mirror (not included).
Signedon prism body and tube: SPENCER / BUFFALO / U.S.A. [in trademark]
on ocular and 4x objective: SPENCER / BUFFALO / U.S.A. [in trademark]
on other objectives: SPENCER LENS CO, BUFFALO. N. Y.
on ocular and 4x objective: SPENCER / BUFFALO / U.S.A. [in trademark]
on other objectives: SPENCER LENS CO, BUFFALO. N. Y.
Inscribedon arm: 123704
on arm: L-1
on arm: L-1
Historical AttributesThis instrument was used by Professor Barghoorn's laboratory in the Gray Herbarium, Harvard University.
ProvenanceFrom Professor Barghoorn's laboratory, Gray Herbarium, Harvard University, 1986