Early Slave dial by National Time Recorders Ltd

Pictures of this interesting item provided by courtesy of the owner R.K.

Case:

Mahogany front surround. Wood rear case to movement. Note unusually deep case to accommodate the movement
Size: 9.75" diameter dial (10.3" diameter overall).

"A" shaped brass plates to movement which appears identical to that used in NTR impulse driven time recorders and has a family resemblance to all the NTR movements I have seen ie to those in spring wound time recorders and in the NTR master clock

The use of this large brass movement for a slave dial is interesting and suggests to me that NTR, having established a demand for their spring wound Time Recorder, found that in order to keep up with the competition they needed to expand their range to include electrically operated items such as a master clock, slave dials and an impulse driven Time Recorder.

They would seem to have achieved this by modification of the original recorder movement rather than by a new set of designs.

Although they would have achieved some economy by using the same parts the slave dial is unnecessarily large compared to any other I have seen

Both slave and Master clocks by NTR appear somewhat rare.