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W.D. Bowkett Pocket Thermograph

Specifications

W.D. Bowkett Pocket Thermograph

Category

Science and Technology

Classification

CHENHALL - Tools & Equipment for Science & Technology - Thermal T&E - Thermometer - Thermograph

Object Origin
Inventor:

Bowkett, W. D.

Date Built:

c. 1870

Place of Production:

Birmingham, England

Physical Characteristics

Object Description: Thermograph (a) with removable lid (b) and small metal key (c). Circular white paper graph with a thin metal needle attached to the top. Lid has white text embossed on front in concentric circles. Key has two (2) circles as the handle and a small cylindrical pin. The pin fits into a small hole on the back of he thermograph.

Materials:

paper

metal

Marks: Outer ring: "W.D. BOWKETTS / PATENT THERMOGRAPH" Inner ring: "40 / SALT & SON / SOLE LICENSEES / BIRMINGHAM"

Measurements: Total Size:
    Height: 0.75 in, Diameter: 3.5 in
    Weight: 0.334 lbs

Credit

Museum Purchase, 2010.1.4a-c

Display Status

On Exhibit

W.D. Bowkett Pocket Thermograph

About: W.D. Bowkett Pocket Thermograph

About: W.D. Bowkett Pocket Thermograph

Made by W. D. Bockett, this pocket thermograph from the 1870s was used to graph body temperature, ranging from 98 to 106 degrees Fahrenheit, over the course of a day. As the printed paper dial rotated, the thin metal lever, which would hold a pen, would be carried outwards from the center of the sheet if temperature rose and inwards if temperature fell.

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