General Information

Serial #

26803

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

synthetic casing with metal control panel/ synthetic digital indicator casing, handle cover, controls and lamps, power cord, parts/ metal switch and parts/ rubber? feet

Dimensions

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

Length

42.0 cm

Width

24.3 cm

Height

30.8 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Miscellaneous

Sub-Category

N/A

Manufacturer

AKA

Guildline

Country

Canada

State/Province

Ontario

City

Smiths Falls

Context

Country

Canada

State/Province

Ontario

Period

Generally, early 1960's to late 1980's; this instrument was calibrated in the 1973

Canada

An instrument used in the Surface Instrument Unit of the Instrument Division of the Meteorological Branch of the Department of Transport of the Government of Canada. The Meteorological Branch became the Atmospheric Environment Service in 1971 and so this instrument was probably manufactured before that date. 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 which produces a very accurate and very stable voltage level, used as a voltage standard in calibration laboratories.

Technical

An example of a precision instrument used as a voltage standard. The Guildline 9152 standard cell enclosure was introduced in the early 1960's. They were used as voltage standards at the national standard laboratory level, or they could output a very accurate and very stable voltage level (or levels depending on the configuration). The last build of this instrument was in the late 1980's, when it was superceded by new semiconductor technology. Today, there are still many fully functional 9152's being used by many national Metrology Institutions around the globe (Ref. 2). The instrument consists of a multi-walled insulated chamber with an inner chamber containing four saturated standard cells. The internal temperature is maintained at 30 degrees +-.01 degrees C. by a heater to maintain minimal thermal gradients. This portable version has a Formica case with the cell connections and calibration card on the casing top. The calibration card indicates that this instrument was calibrated at the National Research Council in 1973; a second card indicating cell voltages is dated 1976 (Ref. 1).

Area Notes

Unknown

Details

Markings

red and black lettering on front reads 'STANDARD CELL ENCLOSURE/ TYPE 9152/P4/ GUILDLINE INSTRUMENTS LTD./ SMITHS FALLS, ONT. CANADA/ No 26,803'/ black lettering on side reads 'PAT PENDING/ 349,723 US/ 894,817 CAN'/ label on side reads 'GUILDLINE/ GUILDLINE INSTRUMENTS LIMITED/ SMITHS FALLS, ONTARIO, CANADA'/ label on casing reads ‘GOVERNMENT OF CANADA/ METEOROLOGICAL BRANCH/ INSTRUMENT DIVISION/ SURFACE INST. UNIT/ DEPARTMENT OF TRANSPORT'/ inventory label reads ‘ASCL JAN 84/ DS-0130'/ typed label on casing top reads in part 'CALIBRATED NRC APR 73'/ typed label on top of digital indicator reads in part 'Date/ 26 Nov/ 1976'

Missing

appears complete

Finish

brown wood grain finish synthetic casing/ brushed metal control panel/ black green, red and yellow synthetic controls/ plated switch/ black synthetic digital dial, handle, power cord/ black feet

Decoration

N/A