I need a pair of block and tackle balances. The old parts are 1/2" wide, non tilting, 29" in length. The stamping on back is very faint, but I believe the stamping on back is 28B U6B What part number dod I need fromn Swisco? thanks for your help
-Howard
Hello,
With this combination of attachments, you could have either an S380-29 or S385-29 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 2820 spring strength options for your replacement balances.
Thank you and let us know if you have any other questions or concerns.
