Thermometers - Antique and Vintage Cameras

Watkins Time Thermometer

1909

Watkins Meter Co.

Hereford

England

Image of Watkins Time Thermometer

Three examples.

The Time Thermometer is for use with the Watkins Thermo method of development. After diluting the developer to the correct amount according to the plate type and developer, the development time can be read directly from the height of the mercury. The scale is applicable for developers having a Temperature Coefficient of 1.9 and is marked: Pyro-Soda; Metol Quinol; Watkins Time Developer; Rodinal; Certinal; Azol and Victol. Versions for Rytol and Kodol developers and Autochrome plates were also advertised. Production ceased during World War I but recommenced around 1920.

With:
Tube.

References & Notes:
BJA 1910, pp. 25, 627. Watkins Manual 1911. Relates to BP 22456/1907.

Eastman Thermometer

Kodak Ltd

London

England

Small mercury thermometer attached to metal surround. Scale: 14 - 120 F. Price 2/-.

With:
Box.

References & Notes:
Kodak Cat. 1915, p. 62.

Ilford Dish Thermometer

Ilford Ltd

Ilford

England

Scale: 40 - 80 F, 5 - 25 C. 8 " length.

Talco Photographic Thermometer

Scale: 40 - 90 F. 5" length in metal case. The case can be reversed to form a handle.

Thermometer

Scale: 50 - 90 F. Alcohol. 5 " length in metal case.

With:
Box.

Thermometer

James A. Sinclair & Co. Ltd

London

England

Scale: 40 - 90 F. Alcohol. 5" length in metal case.

Notes:
Whitehall address.

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