- Accession Number:
- 2003.185.59
- Description:
- Device used for measuring the pH of solutions. Features include: a Coleman impulse amplifier circuit, an electronic amplifier, a precision-wound potentiometer, and a Weston type standard cell. Electrometer is enclosed in a wooden case with a hinged lid and a leather handle attached to the top of the lid. On the front is a metal fastener of which the bottom half is missing. A hinged door on the left side is secured shut with 4 screws and allows access to two tubes. Manufacturer's directions for using the device are printed on laminated paper and attached to the inside of the lid. A typewritten paper label with the name of the device is glued to the front of the case. "Inst. no. 2958" and "Model 3 D" --manufacturer's metal label on top of electrometer. This item was used at the Kentucky School for the Blind.
- Height:
- 9.5
- Width:
- 12
- Depth:
- 7.5
- Date Made:
- ca. 1940
- Place of Origin:
- Maywood, IL
- Collection:
- KSB Collection
- History/Provenance:
- KSB Collection
- Credit Line:
- Gift of the Kentucky School for the Blind, 2003.185
- Subjects:
- Chemistry. Instructional aids, tools, and supplies. Science.
- Dimension Notes:
- overall
- Made:
- Coleman Electric Co.
- Material:
- Wood, metal plastic, glass, leather, rubber
- Updated:
- 05/21/2010
