Norbro Engineering
of Bolney, Sussex
presumably the company of the Norris Brothers - Eric, Kenneth and Lewis
Makers of pneumatic actuators, sold by Worcester Controls Corporation worldwide
1973 Won a Design Council award for a torque unit (torque meter?)[1]
1973 Acquired by Worcester Controls Corporation of USA[2]
Presumably subsequently renamed Worcester Controls.
1978 Worcester Controls Corporation was acquired by BTR.[3]