articulated forceps clamp for polarimeter
Date: 1860-1880
Inventory Number: 1996-1-0703b
Classification: Polarimeter
Subject:
Attributed to: Louis Jules Duboscq (French, 1817 - 1886)
Cultural Region:
Place of Origin:
Dimensions:
3.2 × 10 × 8 cm (1 1/4 × 3 15/16 × 3 1/8 in.)
Material:
Description:
An attachment piece, designed to be fixed on the rail of a polarimeter, is made of turned brass is fixed to an articulated brass arm. (It is marked with 4 dots for mounting purposes). At the other end of the arm is a knurled screw at right angles. The screw is free to turn and terminates in a rectangular block of brass. To this block is attached two steel springs, each of which holds a fork-mounted ring. A bolt goes through slots in the springs and holds them together. The two rings, forming a forceps clamp, were designed to hold a mineral sample.
Signedunsigned
FunctionThis articulated joint was used to hold a mineral sample, which was studied with the help of a polarimeter.
Curatorial RemarksPerhaps this specimen holder goes with 1997-1-1477b.
For a complete example of a Duboscq saccharimeter, see 1993-1-0002.
For a complete example of a Duboscq saccharimeter, see 1993-1-0002.