Tolles solid objective lens, unmounted
Date: 1860-1874
Inventory Number: 1045h
Classification: Workshop Tool
Subject:
Maker: Robert B. Tolles (1823 - 1883)
Maker: Boston Optical Works (fl. 1867 - 1895)
Maker: Charles X. Dalton (1840 - 1912)
Cultural Region:
Dimensions:
wood box: 4 x 2.6 x 2.6 cm (1 9/16 x 1 x 1 in.)
brass canister: 3 × 1.8 × 1.8 cm (1 3/16 × 11/16 × 11/16 in.)
solid lens: 2 x 1.4 x 1.4 cm (13/16 x 9/16 x 9/16 in.)
Description:
1045h is a Tolles workshop pattern or demonstration model.
It consists of a small cylindrical wooden box with a pressure fitting lid. This box contains a brass canister holding a solid objective element. The solid objective is a slightly tapered cylinder of glass with rounded, polished ends.
The brass canister is engraved, "TOLLES."
(This item is stored in parts box 1045a.)
It consists of a small cylindrical wooden box with a pressure fitting lid. This box contains a brass canister holding a solid objective element. The solid objective is a slightly tapered cylinder of glass with rounded, polished ends.
The brass canister is engraved, "TOLLES."
(This item is stored in parts box 1045a.)
In Collection(s)
Signedon canister: TOLLES
Historical AttributesLikely a gift from Tolles's longtime partner and successor, Charles X. Dalton around 1900.
Curatorial RemarksAccording to Eben Gay, the solid lens is similar to that used for a 2-inch focus objective.
ProvenanceTolles - Dalton workshop, Boston.