聽 聽 聽聽
贬别颈驳丑迟:听14听肠尘听
奥颈诲迟丑:听11听肠尘听
顿别辫迟丑:听15听肠尘听
Manufacturer: C.F. Palmer (London) LTD.聽聽
Model: 100-120 Volts聽
惭补迟别谤颈补濒:听惭别迟补濒听
Date: c1935聽
Dr. Richard Fraser, Director of the Maude Abbott Medical聽Museum,聽provides a brief description of the function and/or use of the equipment.聽
This device was聽connected to a聽battery聽by聽a pair of binding posts at the bottom of the front panel. Above these are five contact pairs that can聽be closed at intervals of 1, 5, 10, 30 or 60 seconds to produce a periodic time reference for an experiment.聽聽