Crawley motor plough, 1919.
1914-1924
Crawley motor plough, Model OM3, three furrow, by Crawley Agrimotor Co., Saffron Walden, Essex, Serial No. 13040, c. 1919. Engine: Serial No. 43994, 30 hp 4-cylinder side valve petrol.
D.C. amplifier and electrometer
1960-1979
D.C. amplifier and electrometer, type EN50, no.6983, by WPA (Walden Precision Apparatus Ltd.), 1965-1975 (not in working order)
Hand Pushed Hearse
1892
Hand pushed hearse, 1892, made by Hayward of Saffron Walden
"Edspot" combined Wheatstone bridge and potentiometer
1960-1979
"Edspot" combined Wheatstone bridge and potentiometer, type KN15, no.4831, by WPA ( Walden Precision Apparatus Ltd.), 1965-1975