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Resistance Decade Box

From the Collection of The Ed Muirhead Physics Museum Level 2, The School of Physics, David Caro Building (192) Corner of Elgin and Swanston Streets The University of Melbourne Parkville VIC

Description
This rectangular wooden resistance decade box features four large dials for controlling resistances. The dials are mounted atop a black plastic panel, each with a square base. Three smaller dials are mounted to the right of the large dials.
Size
height: 17.5cm length: 40cm depth: 13.5cm
Object Registration
451
Keywords
j. l. william, decade box, electrical equipment, resistance decade box, scientific instruments
Historical information
This object is believed to be associated with training at the Parkville Secondary Teaching College during the 20th Century.
When Made
mid-20th Century
Made By
J. L. William Scientific Instruments (Scientific Instruments)
Significance
Related to objects 450 and 452
Inscriptions & Markings
Embossed plaque at front: 'J. L. WILLIAM / SCIENTIFIC INSTRUMENTS / SERIAL No 3960 / TYPE RB4DS / MELBOURNE / AUSTRALIA'
Engraved and filled white on top plate from left to right: 'ABSOLUTE OHMS AT 20 C / MANGANIN' Logo reading: 'J. L. WILLIAM / SCIENTIFIC / INSTRUMENTS / MELBOURNE / SERIAL No 3960' 'ZERO RESISTANCE / 0.004 OHM'
Engraved on back edge of top panel: 'SECONDARY TEACHER COLLEGE PARKVILLE'
Dials are labelled underneath with unit measurements for resistance settings, engraved and in-filled white.
Last updated
3 Mar 2017 at 10:11AM