Herbert Controls and Instruments
of Spring Road, Letchworth, metrology and inspection equipment manufacturing subsidiary of the Alfred Herbert Machine Tool Group.
1969 Two Herbert Group companies, Herbert-BSA Electrics Ltd. and the Sigma Instrument Company Ltd, have been amalgamated to form Herbert Controls ...[1]
1970 'Herbert Controls and Instruments (incorporating Sigma Instrument Co. Ltd.) is engaged in the manufacture of special precision gauging equipment'[2]
1971 KITTS GREEN, BIRMINGHAM - advertised staff available for re-employment[3]
