Tolles solid eyepiece
Date: 1876
Inventory Number: 1045p-4
Classification: Microscope Ocular
Maker: Robert B. Tolles (1823 - 1883)
Maker: Boston Optical Works (fl. 1867 - 1895)
Maker: Charles X. Dalton (1840 - 1912)
User: Department of Geology and Geography, Harvard University (1890 - 1961)
Cultural Region:
Place of Origin:
Dimensions:
eyepiece: 5.6 × 4.2 × 4.2 cm (2 3/16 × 1 5/8 × 1 5/8 in.)
Description:
1045p is a set of 5 Tolles solid eyepieces, 2 belonging to Louis Agassiz (all stored in Tolles box 1045b). This is eyepiece 1045p-4:
One solid eyepiece with a top and bottom lens. The protective sleeve for the lower solid element can be unscrewed to reveal the solid element held in a cylindrical brass mount. The side of this hidden mount is stamped "TOLLES." It is dated with a very small scratch mark, "76 - P. 164." The protective sleeve for the top lens has nickel plating. This eyepiece has a sticker saying that it came from the Geology Department.
One solid eyepiece with a top and bottom lens. The protective sleeve for the lower solid element can be unscrewed to reveal the solid element held in a cylindrical brass mount. The side of this hidden mount is stamped "TOLLES." It is dated with a very small scratch mark, "76 - P. 164." The protective sleeve for the top lens has nickel plating. This eyepiece has a sticker saying that it came from the Geology Department.
In Collection(s)
Signedstamped on solid lens mounting and hidden from view: TOLLES
lens mounting scratched: 76 P. 164
lens mounting scratched: 76 P. 164