D'Arsonval galvanometer no. 151667
1947
Servo Amplifier type D-614-D
1960
Variable inductometer type 14-G
1937
Decade oscillator
1959
Siphon recorder
1955
Hysteresis motor type D-699-B/2 for facsimile machines
Hysteresis motor type K-145-A for facsimile machines, 1965
1965
Microfarad condenser
1906
Cuff's translation switch
radio
1935
Mica condenser type B-516-E
1954
Resistance box rotary element
Three-inch magslip transmitter type X-CO MKII
Analogue to digital converter synchroniser
Resistance box 1 megohm
1938
Stud switch, by Muirhead and Co. Ltd.
Weston standard cell type D-698-A
1964
Condenser type 134-NA
Decade condenser type B-21-F
1956
Wheatstone bridge
1915
Muirhead-Wigan decade oscillator type D-105-A
Artificial line inductive resistance no. 6760
Artificial line inductive resistance no. 6557
R.F. Bridge
1948
Master clock no. 65640
1932
Capacitor type 39-AT
Condenser type 39-AT
Condenser type 39-A
Key switch, type C-412-C, by Muirhead and Co. Ltd.
Mica condenser type M-2
Mica condenser type M-2
Capacitor type M-82
Mica condenser type M-47014
Capacitor type 239-AT
Condenser type 134-JA
Transformer type D-732-A/27
Artificial Line type D-250-B
1945
Variable air condenser type A-411-B
1963
Capacitance bridge type A-168-A, no. 314034, by Muirhead & Co. Ltd.
1958
Synchro control transmitter type 15-CX-46
Capacitor type M-81
B. Smith's double switch
Magslip recorder type D-523-A
1950
Capacity bridge type D-23-B
1940
Electric clock, by Muirhead and Co. Ltd.
Time Switch
Muirhead Siphon recorder
Time switch type D-345- no. 176118 by Muirhead and Co. Ltd.
1950
Time switch type D-345-A no. 136441 by Muirhead and Co. Ltd
