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Ammeter

Details

Artifact no.
1985.0826.001
Model
SWAIL BRAILLE
Manufacturer
National Research Council Canada
Manufacturer Location
Ottawa, Ontario, Canada
Manufactured Date
Circa 1970
Context Function
TACTILE & AUDIBLE CURRENT READINGS; LEFT 'MULLING SCALE' IS TUNED FOR NO SOUND, RIGHT 'TONE MATCHER SCALE' TUNED TO POINT WHERE ONE GETS A SECOND TONE, & READING IS TAKEN FROM BRAILLE SCALE.
Context Technical
THIS ARTIFACT, MADE IN THE 70S, SHOWS THE GROWING AWARENESS IN THE 70S OF THE CONTRIBUTIONS TO SOCIETY THAT COULD BE MADE BYPHYSICALLY DISABLED PEOPLE.
Context Canada
ARTIFACT WAS BUILT IN CANADA FOR THE CANADIAN BLIND BY THE RADIO AND ELECTRICAL ENGINEERING DIVISION OF THE NATIONAL RESEARCH COUNCIL. IT WAS ONLY USED IN DEMONSTRATIONS AND NOT IN ACTUAL MEASUREMENT.
Description
METAL CASING/ PLASTIC DIALS/ ALUMINUM DIAL FACES/ RUBBER FEET.
Number of Parts
1
Serial Number
10592
Artifact Finish
CASING PAINTED LIGHT GREY/ DIALS, KNOBS ARE BLACK/ VISUALAMMETER ON TOP IS WHITE AND BLACK/ SILVER-COLOURED SPEAKER COVER ON SIDE; CORD IS GREY/ FEET ARE BROWN.
Artifact Markings
BRAILLE DOT MARKINGS ON DIAL FACES/ 'NULL CAL', 'METER' 'MATCHER CAL' HANDWRITTEN IN BLACK MARKER ON BACK/ 'FUSE' IN WHITE ON BLACK FUSE SWITCHES/ 'BACH-SIMPSON LTD. LONDON CANADA', 'DIRECT CURRENT', 'MILLIAMPERES', AND 'SIMPSON' MARKED ON VISUAL AMMETER/ 'DEMO METER READER 3-4-76 NULLING & TONE SHIFTER' HANDWRITTEN IN BLACK MARKER ON BOTTOM OF UNIT.
Group 1
Communications
Category 1
Service-test equipment
Material
metal->aluminum;synthetic->plastic;resin->rubber
Length
23.5 cm
Width
15.2 cm