Windows Balances Spring

We can supply this balance, but it will have to be a custom order since it's not a stock product; what you have here is called a "Hybrid" balance, typically used on heavy duty or commercial grade windows.

Before we go any further, can you tell me if there is a stamp at the top of the tube? It should be a string of numbers and letters. We will need that in order to proceed.

If there is no stamp, then I will instead need to know the precise weight of the sash, down to the ounce.

I will also need to know the length of the tube (not the spring) and how many you wanted to buy.