Gas filled pyrometer standard No. 285, calibrated

Made:
c.1951
maker:
National Physical Laboratory

Gas filled pyrometer standard No. 285, calibrated at the National Physical Laboratory (a specially designed lamp with a metal filament, in a wooden case, probable date 1951.

Details

Category:
Heat
Object Number:
2001-113
Materials:
felt, glass & metal and wood
Measurements:
case: 112 x 292 x 115 mm
type:
pyrometer
credit:
British Alcan Aluminium plc