Transit
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1986.0192.001
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- OBJECT TYPE
- THEODOLITE/SURVEYOR'S/PORTABLE
- DATE
- 1912–1914
- ARTIFACT NUMBER
- 1986.0192.001
- MANUFACTURER
- Cooke, T. & Sons Ltd.
- MODEL
- D.L.S.
- LOCATION
- London & York, England
More Information
General Information
- Serial #
- 14020
- Part Number
- 1
- Total Parts
- 13
- AKA
- N/A
- Patents
- N/A
- General Description
- WOODEN CARRYING BOX WITH LEATHER COVER AND CARRY- ING STRAP/ METAL STRAP BUCKLE/ CANVAS BAG/ BRASS TRANSIT; GLASS BALANCING VIALS.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 48.0 cm
- Width
- 21.9 cm
- Height
- 19.8 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Exploration and Survey
- Category
- Measurement-angles
- Sub-Category
- N/A
Manufacturer
- AKA
- Cooke
- Country
- England
- State/Province
- Unknown
- City
- London & York
Context
- Country
- Canada
- State/Province
- Unknown
- Period
- THIS INSTRUMENT USED C. 1913- 1930S, AND POSSIBLY LATER.
- Canada
-
D.L.S. PATTERN INSTRUMENTS DENOTE THOSE DESIGNED SPECIFICALLY FOR USE BY DOMINION LAND SURVEYORS. - Function
-
TRANSITS FITTED WITH BOTH A HORIZONTAL CIRCLE AND VERTICAL CIRCLE OR ARC MAY BE USED TO MEASURE BOTH HORIZONTAL AND VERTICAL ANGLES. - Technical
-
INSTRUMENT READS TO 10 MINUTES OF ARC. - Area Notes
-
Unknown
Details
- Markings
- .1: SMALL RECTANGULAR PLATE SCREWED TO BOX TOP: 'THE HUGHES OWENS CO., Ltd./ SOLE AGENTS/ MONTREAL, TORONTO, OTTAWA, WINNIPEG'./ Label on inside of box bears following info.: ‘RULE FOR OBSERVATIONS WITH STADIA LINES/ THE observed distances read off by this instrument/ are all necessarily measured from a point in/ advance of the object glass by a distance equal to/ the focal length of the latter. Hence, in order to/ correct the distances to the centre of the instrument,/ a constant has to be added to the observed distances,/ which is equal to the principal focal length plus the/ distance from the objective to the centre of the/ instrument./ In this case, the constant is 10"1/4 x 6'"3/4/ or 17"./.3: FOLLOWING INFO. INSCRIBED ON BASE: 'T. COOKE & SONS LTD./ LONDON & YORK/ NO. 14020/ logo/ THE ONTARIO HUGHES OWENS CO. LTD./.4: '18' AND 'N' INCISED ON EYEPIECE
- Missing
- PLUMB BOB MISSING. CROSS-HAIRS IN SPARE DIAPHRAGM BROKEN. TELESCOPIC COMPASS DAMAGED.
- Finish
- TRANSIT IS PAINTED BLACK/ LEVELLING SCREWS BRASS-PLATED/ LEATHER COVERED CARRYING CASE.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Cooke, T. & Sons Ltd., Transit, circa 1912–1914, Artifact no. 1986.0192, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1986.0192.001/
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