D. C. Gall's co-ordinate a.c. potentiometer D. C. Gall's co-ordinate a.c. potentiometer Object Number: 1987-435/1 type: potentiometer
Mutual inductor for use with D.C. Gall's co-ordinate a.c. potentiometer Object Number: 1987-435/2 type: mutual inductor
Phase splitting and change-over board for use with D.C. Gall's co-ordinate potentiometer Object Number: 1987-435/3 type: phase splitting and change-over board
Isolating transformer for use with D.C. Gall's co-ordinate potentiometer Object Number: 1987-435/4 type: transformer