Renseignements généraux

Nº de série

118

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

metal (brass?) armour/ glass tube/ mercury?

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

30,5 cm

Largeur

S/O

Hauteur

S/O

Épaisseur

S/O

Poids

S/O

Diamètre

1,5 cm

Volume

S/O

Lexique

Groupe

Météorologie

Catégorie

Mesure de température de l'atmosphère

Sous-catégorie

S/O

Fabricant

Ou

Inconnu

Pays

Inconnu

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Inconnu

Période

1970s+; ithis instrument was apparently in use for 30 years (Ref. 6)

Canada

An example of an armoured thermometer of a type used by the Meteorological Service of 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).

Fonction

An instrument used to measure temperature by means of its effect on a column of mercury in glass, armoured for use in measuring water temperature.

Technique

An armoured thermometer which appears to be the type used with B.M.O. (British Meteorology Office) type sea temperature buckets of the kind used by the Canadian Meteorology Service circa 1971 (see 1987.0825, 1987.0826, 1989.0112). The armoured thermometer was fixed in the bucket, the bucket was suspended from a stationary or moving ship so that water passed through it, enabling the thermometer to reach the temperature of the seawater (Ref. 1). Surface water temperatures are measured on ships as part of the meteorological observations. Surface water temperature is an important source of energy for the atmosphere and is needed for computer forecast models (Ref. 4). In 1971 the Canadian Meteorological Service of the Department of Transport became the Atmospheric Environment Service (AES) of the Department of the Environment; the name was changed back to MSC by 1999 (Refs. 2-3). Artifacts marked ‘AES' were made in that period. Temperature has been measured in degrees Celsius in Canada since the mid 1970s.

Notes sur la région

Inconnu

Détails

Marques

Black lettering on thermometer front reads 'AES SEA TEMP' , 'BCY5' and '118'/ black scale markings and numbers for approx. -10 to 35 degrees C.

Manque

complete

Fini

gold coloured metal armour/ clear, colourless glass tube with white back/ metallic bulb

Décoration

S/O