2 threaded adaptors for the bayonet objective mount
Date: 1860-1874
Inventory Number: 1045e
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:
1.9 × 2.6 × 2.6 cm (3/4 × 1 × 1 in.)
Material:
Description:
1045e is a Tolles workshop patterns or demonstration models.
These are 2 adapters for the bayonet mount. The smaller collar is made of yellow brass and has one set of exterior threads. The larger collar is made of red brass and has a different set of exterior threads. The latter also has a screw-on cap.
(Both are stored in parts box 1045a.)
These are 2 adapters for the bayonet mount. The smaller collar is made of yellow brass and has one set of exterior threads. The larger collar is made of red brass and has a different set of exterior threads. The latter also has a screw-on cap.
(Both are stored in parts box 1045a.)
In Collection(s)
Signedunsigned
FunctionThese adaptors permitted one to use a non-Tolles objective (having threads) with a Tolles microscope having a bayonet mounting; or vice versa, to use a Tolles objective (having a bayonet mounting) with another maker's microscope requiring a threaded objective.
Historical AttributesFrom the Tolles - Dalton workshop. Presented by Charles X. Dalton around 1901 to Dr. Ernst.
ProvenanceTolles-Dalton workshop