Seven decade resistance box
1985-1989
Seven decade resistance box, Junior series, type J70, made by J.J. Lloyd Instruments Ltd., Brook Avenue, Warsash, Hants, SO3 6HP, England, rotary switch type
Precision incremental capacitor
1975-1984
Precision incremental capacitor, type PVC4, made by `Jay Jay'. Brook Avenue, Warsash, Hants,SO3 6HP, England, Air spaced capacitor with dual range 1pf or 10pf swing around central value of approximately 20pf. Fixing screws missing
Standard resistance box
1970-1979
Standard resistance box, type number SHFR5, serial number 73, by J.J. Instruments, Brook Avenue, Warsash, Hants,SO3 6HP, England . Has five resistances: 10, 100, 1000, 10000 and 100000 ohms. The three lower values are four terminal resistances
Resistance Deviation Bridge
1980-1989
Resistance Deviation Bridge, type BR20, serial no.0140, made by J.J. Instruments Ltd., Brook Avenue, Warsash, Hants,SO3 6HP, England Rack mounted version
10x1 kilohom decade standard resistance box
1970-1979
10x1 kilohom decade standard resistance box, with thermometer. Made and used by J.J. Instruments Ltd Brook Avenue, Warsash, Hants,SO3 6HP, England as working standard to calibrate production resistances. (Note the label on the box lid does not relate to contents)
10x1 megaohm decade resistance box. Made and used by J.J. Instruments Ltd
1970-1979
10x1 megaohm decade resistance box. Made and used by J.J. Instruments Ltd, Brook Avenue, Warsash, Hants,SO3 6HP, England as working standard to calibrate production resistances
Student's potentiometer
1960-1979
Student's potentiometer, type STD10, by JJ Instruments (Educational Measurements Ltd., Warsash, Southampton), 1965-1975
Apparatus for demonstrating the properties of electrical machines for use in educational establishments
1980-1989
Apparatus for demonstrating the properties of electrical machines for use in educational establishments, type number FH2 MK2, serial No. 354, by J.J.Instruments Ltd., Brook Avenue, Warsash, Hants, SO3 6HP, England. Incomplete.