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Triple-pole changeover time-switch, 1930-1960

Triple-pole changeover time-switch, 1930-1960

1930-1960

Four brass wood-screws for synchronous motor driven clock movement, England, 1940-1953

Four brass wood-screws for synchronous motor driven clock movement, England, 1940-1953

1940-1953

Solar dial for automatic switching of street lamps

Solar dial for automatic switching of street lamps

1870-1932

Frequency and time measuring equipment type TSA3436/2 serial no. M3790 by Venner Electronics Ltd.

Frequency and time measuring equipment type TSA3436/2 serial no. M3790 by Venner Electronics Ltd.

1960-1970

Synchronous motor driven clock movement, 1940-1953

Synchronous motor driven clock movement, 1940-1953

1940-1953

Frequency and Time Measuring Instrument, Venner Electronics Limited, 1965

Frequency and Time Measuring Instrument, Venner Electronics Limited, 1965

1965

15Mc/s converter, for frequency measuring equipment

15Mc/s converter, for frequency measuring equipment

1960-1970

Model Railway layout, 3/16" = 1', 7/8" (`S') gauge, of Swanage Station in the 1930s, electric, built by Bernard Wright of New Malden 1960-1964, exhibited at the Model Railway Club exhibition, 1964.

Model Railway layout, Swanage Station in the 1930s

1960-1964

Wayne Kerr VHF admittance bridge B801, serial number 714, with box of spares. The Wayne Kerr VHF admittance bridge B801 could be operated at any frequency from 1-100MHz for the simultaneous measurement of the capacitance and conductance of aerials, feeders, lines and components, whether balanced or unbalanced. A wide measurement range was available from only a few Standards whose effective values were extended by the use of ratio transformers. This technique permitted the values of the Standards to be selected for maximum stability and minimum phase-angle. A number of accessories were also provided by Wayne Kerr Laboratories.

Wayne Kerr VHF admittance bridge B801

Venner 'Memopark' pocket clockwork timer

Venner 'Memopark' pocket clockwork timer

Venner 'Memopark' pocket clockwork timer in special perspex case for exhibition

Venner 'Memopark' pocket clockwork timer

Standard type solar dial as used for automatic switching of street-lamps at dusk and dawn with wooden stand

Standard type solar dial

Millisecond stopclock S type TSA4 No.3408, fitted with normally closed external push-button, New Malden, Kingston-upon-Thames, Greater London, England, 1958

Millisecond stop clock, England, 1958

1958

Synchronous motor driven clock movement with 30 hours auxiliary spring reserve, type ER, by Venner Ltd., New Malden, Kingston-upon-Thames, London, England, 1940-1953

Synchronous motor driven clock movement, England, 1940-1953

1940-1953

Pallet 1 of 2, holding various sections of track, with electrical components attached, and diorama. Model Railway layout, 3/16" = 1', 7/8" (`S') gauge, of Swanage Station in the 1930s, electric, built by Bernard Wright of New Malden 1960-1964, exhibited at the Model Railway Club exhibition, 1964.

Model Railway Layout, Swanage Station in the 1930s

1960-1964

One photograph showing women and children marching. Caption from the published photograph is attached to the back and reads: 'Mothers and children marched to Malden Council to protest against the proposed increase in rents on the new Potters Farm civic estate.' A handwritten note on the back includes details about when and where the march took place.

Daily Herald Photograph: Rent strike

1938-07

One photograph showing women and children demonstrating at Malden Council offices in London to protest the proposed increase in rents. A handwritten note on the back includes details about when and where the march took place. See object 1983-5236/49486

Daily Herald Photograph: Rent strike

1938-07

Synchronous motor-driven solar dial time-switch, type MSDC, fitted with special fast clock revolving once per minute, to show operation of switchgear

Synchronous MSDC motor-driven solar dial time-switch

Cast metal case for synchronous motor-driven solar dial time-switch, type MSDC, fitted with special fast clock revolving once per minute, to show operation of switchgear

Cast metal case for synchronous MDSC motor-driven solar dial time-switch

Synchronous motor-driven solar dial time-switch, type MSDC, fitted with special fast clock revolving once per minute, to show operation of switchgear with a cast metal case

Synchronous MSDC motor-driven solar dial time-switch

Pallet 2 of 2, holding section of track, diorama, and large box containing additional parts. Model Railway layout, 3/16" = 1', 7/8" (`S') gauge, of Swanage Station in the 1930s, electric, built by Bernard Wright of New Malden 1960-1964, exhibited at the Model Railway Club exhibition, 1964.

Model Railway Layout, Swanage Station in the 1930s

1960-1964

Two quartz crystals (7.269 MHZ 6.674 MHZ) made by Quartz Crystal Co. Ltd. New Malden

Two quartz crystals (7.269 MHZ 6.674 MHZ)

Power supply and interconnecting lead and plug S/No. 6814, New Malden, Kingston-upon-Thames, Greater London, England

Power supply and interconnecting lead and plug S/No. 6814, England

Frequency and time measuring equipment type TSA3436/2 serial no. M3790 and 15Mc/s converter, by Venner Electronics Ltd., New Malden, Surrey, England, with 6-digit readout using optical projection modules and ranges from 15c/s - 1.1Mc/s in frequency mode

Frequency and time measuring equipment type TSA3436/2 serial no. M3790 and 15Mc/s converter

1960-1970