General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

metal wire mesh with synthetic tape? edging

Dimensions

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

Length

16.4 cm

Width

10.7 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Precipitation amount, rate & duration measurement

Sub-Category

N/A

Manufacturer

AKA

Environment CA

Country

Canada

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

possibly 1930s+

Canada

An example of a device used by the Meteorological Service of Canada in preparing weather maps. A piece of meteorological equipment from a large collection of meteorological instruments used by the Meteorological Service of Canada (previously Atmospheric Environment Service) and acquired 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

A device used to highlight precipitation and cloud areas on a weather map without obscuring the plotted data.

Technical

The device was placed over a weather map and the grid was used to highlight, by hand, precipitation or precipitation producing middle cloud. Different colours represented different types of precipitation. Green meant rainfall, blue snowfall, red freezing precipitation, and brown meant middle cloud (6500 to 20000').

Area Notes

Unknown

Details

Markings

None

Missing

Complete

Finish

Metallic

Decoration

N/A