What is the difference between the S770 options?

Question

I want to order two of these balances. I'm asked whether I want option D, C, or B. I can't find any explanation of what the different options are. Can you explain?

Thanks,
Richard P.

Casey · Accepted Answer

Hello Richard,
The stamp options indicate different strength balances, normally the stamp is indicated on the original balance.

If you cannot locate the stamp on the Series 770 balance you are trying to replace, please remove the window sash and place it on a scale. You will need the weight of the window sash to determine the proper stamp option.

I would be happy to provide the weight ranges for each option, just need the balance length.