Theodolite
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1988.1316.001
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- OBJECT TYPE
- PORTABLE/5 1/2 INCH
- DATE
- 1922
- ARTIFACT NUMBER
- 1988.1316.001
- MANUFACTURER
- Troughton & Simms
- MODEL
- 12146
- LOCATION
- London, England
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- LARGELY BRASS; CIRCLES AND VERNIERS DIVIDED ON SOLID SILVER; GLASS OPTICS.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 28.0 cm
- Width
- 15.0 cm
- Height
- 33.0 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
- Troughton Simms
- Country
- England
- State/Province
- Unknown
- City
- London
Context
- Country
- Canada
- State/Province
- Unknown
- Period
- THIS TRANSIT PROBABLY USED C. 1920S TO 1950S, AND POSSIBLY LATER.
- Canada
-
PART OF A COLLECTION OF FORESTRY EQUIPMENT AND DOCUMENTATION ACQUIRED FROM THE PETAWAWA FORESTRY MUSEUM IN 1988. THE FORESTRY SERVICE PRESUMABLY ACQUIRED THIS THEODOLITE FROM THE SURPLUS INVENTORY OF EMR: THE TOPOGRAPHICAL SURVEY INVENTORY NO. IS CLEARLYINCISED ON THE THEODOLITE BED. - Function
-
USED TO MEASURE BOTH HORIZONTAL & VERTICAL ANGLES. - Technical
-
EXAMPLE OF COMPACT, PORTABLE THEODOLITE POSESSING ACHROMATIC ASTRONOMICAL (INVERTING) OPTICS & INTERNAL DRAWTUBE; AND FINELY DIVIDED CIRCLES GRADUATED 30 MINUTES, READING TO ONE MIUTE. - Area Notes
-
Unknown
Details
- Markings
- " THE TOPLEY COMPANY/ OTTAWA CANADA " & logo incised on theodolite bed, below tube level; " No 12146 " incised above. T.S.984 " incised in bed, opposite. Intertwined "T" & "S" logo incised on telescope body tube. Vertical circle graduated 0-90-0-90-0, and divided to half-degrees; verniers incised "C" & "D" divided 0-30 and read by magnifying eyepieces. Horizontal circle graduated 0-360, and divided to half-degrees; verniers incised "A" & "B" divided 0-30, and read by hinged, screw-type magnifying eyepieces.
- Missing
- NONE. CROSSHAIR SIGHT MISSING OR BROKEN. EYEPIECE CASING & VERTICAL CIRCLE DENTED.
- Finish
- NATURAL BRASS FINISH ON MOST SURFACES; SELECTED AREAS & COMPONENT PARTS (IE. THEODOLITE BED, PINNIONS, INNER SUPPORTS FOR VERTICAL CIRCLE) HAVE BEEN CHEMICALLY DARKENED.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Troughton & Simms, Theodolite, before 1922, Artifact no. 1988.1316, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1988.1316.001/
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