Theodolite

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Ingenium, 1968.0768.001
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OBJECT TYPE: BALLOON/PORTABLE
DATE: 1933
ARTIFACT NUMBER: 1968.0768.001

MANUFACTURER: Watts, E.R. & Son
MODEL: M.S.C. W-1
LOCATION: London, England

More Information

General Information

Serial #: 12219
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: METAL THEODOLITE. GLASS OPTICS, TUBE LEVEL BUBBLES, AND WINDOWS OVER VERNIERS.

Dimensions

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

Length: 21.6 cm
Width: 20.3 cm
Height: 25.4 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Meteorology
Category: Upper wind speed & direction measurement
Sub-Category: N/A

Manufacturer

AKA: Watts
Country: England
State/Province: Unknown
City: London

Context

Country: Canada
State/Province: Unknown
Period: Between 1930S & 1950S
Canada: USED BY CANADIAN METEOROLOGICAL SERVICE. M.S.C. TYPE W-1 THEODOLITE WAS CONVERTED M.S.C. TYPE W INSTRUMENT, WHICH IN TURN WAS CONVERTED WATTS TYPE B THEODOLITE, MADE BY BRITISH MANUFACTURER E.R. WATTS, WHICH SUPPLIED NUMBER OF THEODOLITES TO M.S.C.
Function: INSTRUMENT WITH TELESCOPIC SIGHT FOR ESTABLISHING HORIZONTAL OR VERTICAL ANGLES. USED TO FOLLOW DRIFT OF PILOT BALLOONS TO DETERMINE UPPER ATMOSPHERIC WIND SPEED AND DIRECTION.
Technical: PILOT BALLOON THEODOLITE WAS SIMILAR TO TRANSIT INSTRUMENT USED BY ENGINEERS & SURVEYORS BUT HAD REFLECTING PRISM IN TELESCOPE SO THAT EYE ALWAYSLOOKED IN HORIZONTAL DIRECTION REGARDLESS OF POSITION OF BALLOON. M.S.C. TYPE W-1 APPEARED IN 1954 & 1964 D.O.T. PILOT BALLOON OBSERVATION MANUALS (REF. 1) BUT WAS NO LONGER SUPPLIED BY M.S.C. BY 1958 (REF. 2)
Area Notes: Unknown

Details

Markings: "E.R. WATTS & SON./ LONDON/ No 12219" stamped into base, between and above two levelling feet. Brass plate fixed to adjacent side marked "M.S.C. TYPE W-1/ No 12219".
Missing: APPEARS FAIRLY COMPLETE. MAY BE MISSING SUNSHADE/RUBBER EYESHIELD, AND FILTERS FOR TELESCOPE EYEPIECE. From CA of 08/18/1995 by Tony Missio: Undetermined
Finish: MOTTLED GREY ENAMEL FINISH ON MOST EXTERNAL SURFACES. SOME COMPONENTS HAVE BRIGHT BRASS OR WHITE METAL FINISHES.
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Watts, E.R. & Son, Theodolite, after 1933, Artifact no. 1968.0768, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingenium.ca/en/id/1968.0768.001/

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