pocket compound microscope
Date: circa 1880
Inventory Number: 1087
Classification: Microscope
Subject:
Maker: Boston Optical Works (fl. 1867 - 1895)
Maker: Robert B. Tolles (1823 - 1883)
Maker: Charles X. Dalton (1840 - 1912)
Collector: Ernst-Lewis Collection of Microscopes
Cultural Region:
Place of Origin:
Dimensions:
3.1 × 3.1 × 15 cm (1 1/4 × 1 1/4 × 5 7/8 in.)
Accessories: Tolles objective 1/2 inch, 45 degree; nondescript eyepiece marked "1".
Description:
This pocket microscope consists of a hand-held body tube in which a draw tube carries a red brass objective by Tolles. The objective is a 1/2 inch, 45 degree one. It has 3 lens elements. An ocular marked "1" fits into the other end of the draw tube. Focus is by drawing the tube in or out.
The outer tube has a threaded cover to protect the objective.
The outer tube has a threaded cover to protect the objective.
In Collection(s)
Signedon body tube: BOSTON / OPTICAL WORKS
on objective: TOLLES
on objective: TOLLES
Curatorial RemarksFound among spare parts in the Ernst-Lewis Collection.
Primary SourcesSee Boston Optical Works catalogue 1881, p. 5.
ProvenanceErnst-Lewis Collection of Microscopes, Harvard Medical School.