General Information

Serial #

N/A

Part Number

8

Total Parts

8

AKA

N/A

Patents

N/A

General Description

Silver metal lid fitted for the pendulum case.

Dimensions

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

Length

39.5 cm

Width

39.0 cm

Height

3.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Geophysics

Sub-Category

N/A

Manufacturer

AKA

PYLON

Country

Canada

State/Province

Quebec

City

Montreal

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

The pendulums (.001-003) were obtained circa 1902 by the Dominion Observatory, for use with the Mendenhall Apparatus Order & used by Dr. Otto Klotz (see 1987.2133). This instrument was used to make the first gravity measurements in Canada. The pendulums (.001-006) were used with various forms of the Canadian Pendulum Apparatus until the mid-1970's.

Function

Used to provide a cover to protect pendulums when stored inside the case.

Technical

Pendulums have been used for relative gravity measurements since the early 19th century. Spring-type gravimeters largely replaced pendulums for geophysical surveys by circa 1950. Pendulums continued to be used for long range gravity ties, where the large change in gravity could not be reliably measured by spring-type gravimeters.

Area Notes

Unknown

Details

Markings

N/A

Missing

Appears complete.

Finish

Silver metal lid with a blue fabric cushion on the interior portion.

Decoration

N/A