General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Brass & steel.

Dimensions

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

Length

N/A

Width

2.8 cm

Height

10.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Exploration and Survey

Category

Survey equipment

Sub-Category

N/A

Manufacturer

AKA

Keuffel Esser

Country

United States of America

State/Province

New York

City

New York

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Late 19th century surveying instruments of Dominion Land surveyor John McLatchie (1842-1908) President of the Dominion Land Surveyors (1892- 1893), whose work included surveys of international boundary, the Alaska boundary, and extensive surveys in western Canada and the maritime provinces.

Function

Suspended from an instrument by means of a line, a plumb bob is used to determine the instrument's vertical centre or perpendicularity.

Technical

Example of replacement plumb bob for survey instruments. The plumb bob has remained relatively unchanged since antiquity. Though it can be made out of different materials and its shape may vary, the principle remains the same: a symmetrical weight is suspended from its broad end on a cord or a chain. One notable change to plumb bobs came during the industrial revolution, when the development of metal lathes allowed metal bobs to be more symmetrical, smooth, and aerodynamic. This plumb bob has been machined.

Area Notes

Unknown

Details

Markings

Stamped '6 STANDARD'

Missing

Complete

Finish

Lacquered steel.

Decoration

N/A