the shorter one's metal bar is of 27" length, the numbers on it are D3 (?) 301 26-3
while the longer one's metal bar is 33" inch long, and the numbers are BSI PA 3230
Replacement balances

Quick Learner from California
Nov 26, 2024 1:20 pm
5 user uploaded images
2 Replies

Casey from SWISCO
Nov 27, 2024 12:20 pm


Hello,
It looks like you have either our S351, with a 15-002 bottom attachment, or S390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need.
You'll also need a 2630 spring strength option for your 27" long balances and 3230 options for the 33" replacements. Thank you!

Comparison of the S351 and S390 balance shoes.
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