Height: 14 cm
Width: 11 cm
Depth: 15 cm
Manufacturer: C.F. Palmer (London) LTD.
Model: 100-120 Volts
Material: Metal
Date: c1935
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Dr. Richard Fraser, Director of the Maude Abbott Medical Museum, provides a brief description of the function and/or use of the equipment.
This device was connected to a battery by a pair of binding posts at the bottom of the front panel. Above these are five contact pairs that can be closed at intervals of 1, 5, 10, 30 or 60 seconds to produce a periodic time reference for an experiment.