Object Record
Images
Metadata
Title |
Bausch & Lomb Duboscq Type Colorimeter |
Object Name |
Colorimeter |
Object ID |
2003.501A-E |
Description |
A: Duboscq type colorimeter, biological, with electric illuminator. Hollow black cast iron base attached to a sloping cast iron upright supporting the reader, prisms, and sample cups; reader detaches with two metal screws; upright also supports the sample cups (see B and C) and a mechanism for raising and lowering the sample cups on a focusing rail; two stainless steel knobs at the bottom of the upright control the height of the sample cups; a scale on the front of the upright indicates the height of the sample cups from zero to fifty millimeter, read against a 0-10 vernier scale; base has a circular hole for inserting the electric light bulb (see E) and a screw for holding the bulb in place; a swinging mechanism at the bottom rear of the base controls a metal shield inside the base, which can control the intensity of the bulb's light; two metal tags on the front of the upright identify the manufacturer, patent number, and serial number; an up side down metal tag on the rear of the base identifies a pending patent and serial number. B: Armored sample cup with a glass bottom, metal collar, and glass-lined interior; stored in place on the colorimeter. C: Armored sample cup with a glass bottom and metal collar; stored in place on the colorimeter; missing the glass-lined interior. D: Cast iron shield; fits on the colorimeter to protect the prisms and sample cups; 4.75" tall, 3.625" wide, 3.125" deep. E: Light bulb on a cast iron, cork, and metal base with an on-off switch, attached to a 34.5" electrical cord, stored in place in the colorimeter. |
Dimensions |
H-12.75 W-5.5 D-8 inches |
Material |
Cast Iron, Glass, Cast Brass, Cork |
Made |
Bausch & Lomb |
Digital Collections Link |
https://digital.sciencehistory.org/works/6t053g352 |
Search Terms |
Bausch & Lomb Optical Company Colorimetry Colorimeters Scientific apparatus and instruments Analytical chemistry--Instruments Duboscq, J. (Jules), 1817-1886 |