Peak flow meter, part of medical equipment and tools supplied to members of the London’s Ambulance Cycle Response Unit 2000-2002
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
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
Pillard time lock, c.1877. Consists of main lock, glass front, key for lock and key for glass front. Pillard time lock 1877
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