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torsion balance

https://mhc.andornot.com/en/permalink/artifact1356
Dates
1950
circa 1950
Collection
Queen's University Chemistry Collection
Category
Basic Science Artifacts
Classification
Basic Science, Laboratory Instrumentation
Accession Number
994010016 a-e
Description
Torsion balance; rectancular box-like structure; grey metal; with top and front side windows to flip lid; inside are two silver metal balance plates; with balance view indicator between; light grey plastic adjustable measurement knob to exterior front; scale goes from 0 to 1.0; silver balance adjus…
Accession Number
994010016 a-e
Collection
Queen's University Chemistry Collection
Category
Basic Science Artifacts
Classification
Basic Science, Laboratory Instrumentation
MeSH Heading
Weights and Measures
Description
Torsion balance; rectancular box-like structure; grey metal; with top and front side windows
to flip lid; inside are two silver metal balance plates; with balance view indicator between;
light grey plastic adjustable measurement knob to exterior front; scale goes from 0 to 1.0;
silver balance adjuster knob to bottom front; silver knob feet can be adjusted to level instrument
Number Of Parts
5
Part Names
a - main instrument - Size: Length 29.0 cm. x Width 20.5 cm. x Depth 11.5 cm.
b - balance plate - Size:
c - balance plate - Size:
d - balance plate column - Size:
e - balance plate column - Size:
Provenance
Works by twisting quartz fiber; 0.1 grams is lowest reading; to make very small measurements;
replaced by electric
Maker
The Torsion Balance Co.
Site Made (City)
Montreal
Site Made (State)
Quebec
Site Made (Country)
Canada
Dates
1950
circa 1950
Date Remarks
Dr. Wheeler's estimate
Material
plastic: light grey
metal: grey; silver
Inscriptions
T o front: TORSION BALANCE; sticker to front: Distributed and Serviced by // FISHER SCIENTIFIC;
maker's plate to back: THE TORSION BALANCE CO. // (CANADA) LTD. // MONTREAL, Quebec, CANADA //
Before Shipping Obtain Instructions From Factory
Permanent Location
Storage Room 0007
0007-B2-3
Condition Remarks
overall condition good; dusty
Copy Type
Original
Reference Types
Person
Reference Comments
Dr. Wally Breck; Dr. Robert C. Wheeler
Less detail