Non tilt balance

Thanks for writing in. This looks like either an S380-12 or S385-12 Channel Balance. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Measure the depth of your existing balance's shoe to determine which Series matches best. In either case, for a new stamp option choose 1140. Let me know if you have questions.

Comparison of the S378, S380 and S385 balance shoes.

Great! Based on your old stamp of 11 4, you can use our 1140. Two balances with this stamp can carry a sash weighing 11 through 12 pounds. You can always weigh your sash on a scale to verify that, if you wish.