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Ingenium, 2002.0259.001
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OBJECT TYPE: SURVEYOR'S
DATE: 1935–1950
ARTIFACT NUMBER: 2002.0259.001

MANUFACTURER: Pocklington, Thomas Ltd.
MODEL: DOMINION
LOCATION: Toronto, Ontario, Canada

More Information

General Information

Serial #: 5518
Part Number: 1
Total Parts: 3
AKA: N/A
Patents: N/A
General Description: .1 BRASS (AND POSSIBLY OTHER METALS); GLASS OPTICS AND TUBE LEVEL CYLINDER..2 BRASS SUNSHADE..3 MAHOGANY WOOD CASE HAS FELT LINING ON SOME INTERNAL SUPPORTS; FITTED WITH LEATHER STRAP; METAL HARDWARE, INCLUDING BRASS NAMEPLATE; RUBBER FEET.

Dimensions

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

Length: 46.5 cm
Width: 15.7 cm
Height: 26.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Exploration and Survey
Category: Measurement-distance
Sub-Category: N/A

Manufacturer

AKA: POCKLINGTON
Country: Canada
State/Province: Ontario
City: Toronto

Context

Country: Canada
State/Province: Unknown
Period: THIS LEVEL MAY HAVE BEEN USED MID 1930S-1950, AND POSSIBLY LATER.
Canada: SURVEYOR'S LEVEL MADE IN TORONTO, ONT. BY THOMAS POCKLINGTON LTD., ACTIVE C. 1925-1991, ONE OF FEW CANADIAN FIRMS WHICH MFD. SURVEY APPARATUS.
Function: USED TO MEASURE DIFFERENCE IN HEIGHT BETWEEN TWO POINTS.
Technical: INSTRUMENT IS STANDARD TYPE OF LEVEL USED BY SURVEYORS FOR DETERMINING DIFFERING HEIGHTS OF LAND FROM POINT TO POINT. BASIC CONCEPT & TECHNOLOGY IN EXISTANCE FOR APPROX. 4 CENTURIES: NOT SUPPLANTED UNTIL LASERS & RETROREFLECTOR CUBES ADOPTED IN 1960S-1970S. FITTED WITH 4 ADJUSTMENT FEET, FRONT OBJECTIVE FOCUSING, SUNSHADE, SIMPLE CROSSHAIRS FOR FOCUSING OF EYEPIECE, TUBE LEVEL, KEY FOR LOCKING ROTATION AND FINE ADJUSTMENT KNOB FOR ROTATION. (REF.1)
Area Notes: Unknown

Details

Markings: .1 "THOS. POCKLINGTON LTD./ TORONTO" and "DOMINION/ 5518" incised on level. Glass window of tube level is divided at regular intervals, but not labelled..2 No markings visible..3 "MADE BY/ THOS. POCKLINGTON LTD./ TORONTO" incised in brass plate on case front. "22" stencilled in black on one end panel. "15" stamped on plate, and inside case top.
Missing: NONEEVIDENT.
Finish: .1 BLACK FINE-WRINKLE TEXTURED PAINT FINISH ON MOST EXTERNAL SURFACES. CLEAR GLASS TUBE LEVEL WINDOW. NATURAL BRASS ADJUSTMENT SCREW FOR OBJECTIVE LENS; NATURAL BRASS LEVELLING FEET, OBJECTIVE LENS HOUSING, AND SELECTED ACCENTS..2 SAME BLACK WRINLE-TEXTURED PAINT FINISH ON EXTERIOR AS FOR.1; SMOOTH BLACK INTERIOR..3 WOOD CASE APPEARS VARNISHED ON EXTERIOR. BROWN LEATHER STRAP. GREEN FELT PADS. BRASS PLATE FIXED TO FRONT.
Decoration: N/A

CITE THIS OBJECT

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

Pocklington, Thomas Ltd., Level, circa 1935–1950, Artifact no. 2002.0259, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2002.0259.001/

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