I have a HAC antique clock 1920's. I need help to order the correct replacement mainspring. The Diameter of the Barrel is 46.83 mm, the width of the spring is 17.00 mm, and the thickness of the spring is 0.50 mm. If anyone could point me to the correct replacement spring it would be greatly appreciated.
Randy, under the Clock Repair Forum "Hints and How To", you will find " Calculating the Size of a Mainspring" which will allow you to calculate the length. From that, along with the info you already have, you can order from Timesavers, Merrits or any clock parts supply house. I have just completed repairing/restoring a HAC wall clock from the time period.
