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Gramophone mainspring specifications

Posted: Sat Jan 31, 2015 10:34 am
by epigramophone
Having recently helped a fellow member with a mainspring specification I am now posting the full catalogue of Vulcan mainsprings dated October 1954, by which time the demand for these products must have been in decline. The manufacturers were J.Stead & Co Ltd, perhaps better known for their Songster needles and soundboxes.

My catalogue is an old photocopy, hence the less than perfect images.

Roger.

Re: Gramophone mainspring specifications

Posted: Tue Feb 03, 2015 2:12 am
by emgcr
Many thanks Roger---that is extremely helpful.

Re: Gramophone mainspring specifications

Posted: Tue Feb 03, 2015 2:52 pm
by Orchorsol
Invaluable, many thanks indeed Roger!