Gramophone mainspring specifications
Posted: Sat Jan 31, 2015 10:34 am
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.
My catalogue is an old photocopy, hence the less than perfect images.
Roger.