Peak flow meter, part of medical equipment and tools supplied to members of the London’s Ambulance Cycle Response Unit 2000-2002
Pillard time lock, c.1877. Consists of main lock, glass front, key for lock and key for glass front. Pillard time lock 1877
Tann's 3 1/2 inch reliance guarded five lever flush latch with key. Tann's 3 1/2 inch reliance guarded five lever flush latch
3-wheel keyless combination lock, model M6730 MP, by Sargent and Greenleaf, New York, U.S. A., with combination changing key, c.1949 3-wheel keyless combination lock 1949
One exhibit showing the automatic opening of a door, controlled by a photoelectric cell. One exhibit showing the automatic opening of a door 1931-1933
Model magnetic lock, sectioned with key, by N T Locks Ltd. of Birmingham, 1972 Model magnetic lock 1972