General Information

Serial #

7823

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

glass tube/ mercury?

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

61.0 cm

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Atmospheric temperature measurement

Sub-Category

N/A

Manufacturer

AKA

ERTCO

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

after 1942

Canada

Part of a large collection of meteorological instruments acquired from the Meteorological Service of Canada (previously Atmospheric Environment Service) by the CSTM since 1967. MSC is the government agency responsible for collecting and disseminating meteorological data and forecasts in Canada. It was founded in 1871 in Toronto where it is still headquartered. The MSC was originally on the University of Toronto downtown campus but moved to Downsview in 1971 on land owned by UofT. The headquarters houses laboratories, research facilities and calibration and instrument maintenance facilities (now largely contracted out).

Function

An instrument used to measure temperature by means of its effect on a column of mercury in glass, possibly a calibration or standard thermometer, used to verify the accuracy of thermometers in every day use.

Technical

An example of an American made Fahrenheit mercury thermometer of unusual length (61.0 cm) and fine divisions (1/10th degree). It may be a standard, calibration or inspector's thermometer and appears to be somewhat similar to the British Meteorological Office's inspection thermometer of the 1980s (Ref. 1). See the similar late 19th century Kew standard thermometer 1993.0341. See also the Kew standard thermometer1993.0342 and the mid 19th century Fastré thermometers 1993.0343 and 1993.0344. See the British inspector's thermometer in Ref. 1. The Ever Ready Thermometer Co. of Dubuque, Iowa has been a manufacturer of precision glass thermometers since 1942. ERTCO claims to produce precision thermometers using its state-of-the-art calibration facilities and abilities (Ref. 1).

Area Notes

Unknown

Details

Markings

Black lettering on back reading 'ERTCO 7823(i) USA'/ scale markings and numbers on front for -30 to 120 F.

Missing

complete

Finish

Clear, colourless glass tube with yellow back/ metallic bulb

Decoration

N/A