3/4 x 1-1/4 Constant Force Coil Balance
Constant Force Coil Balance, Open Cam
Available in Single and Double Coil Springs
Pivot Balance Base has a width of 7/8" and length of 1-1/4"
Coil Springs have a width of 3/4"
Coils have numbers stamped in spring that ID Weight
The weight (number) is printed on the end of the spring.
If more than one spring coil, check each coil for different numbers.