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Hilger and Watts, makers of optical measurement instruments, Camberwell Road, London SE5.
Hilger Division - 98 St Pancras Way, Camden Road, London NW1
1959 Measurement devices across a wide spectrum of radiation ultra-violet through visible to infra-red and microwave; new development of use of spectrograph for measuring wear in engine bearings; development of digitising equipment had proved commercially successful; had collaborated with competitor Cooke, Troughton and Simms Ltd to develop a surveyor's automatic level; had acquired Collimator Cases Ltd.
1968 Queen's Award to Industry for Technological Innovation 
Board of Directors in 1951: Chairman and Managing Director: G. A. Whipple Directors: F Twyman, A C Menzies, R Stanley, V W H Towns, A H Campbell