Tyer's No. 6 tablet School of Signalling Manchester

Tablet, brass faced steel, Tyer's No. 6 electric tablet, School of Signalling, Manchester.

Details

Category:
Signalling & Telecommunications
Object Number:
2011-7097
Materials:
steel (metal) and brass (copper, zinc alloy)
Measurements:
overall: 10 mm, 113 mm,
type:
tablet
credit:
Wright, D. J.