19/32 inch thick constant force balance system.

This is thicker than 53100 or 53101 constant force balance systems.

Used by several companies including Hurd, Capitol, Metal Industries, Coronet and others.

Each coil spring has a number embossed on the side that determines the strength of the balance.
They may have one or more coils and the coils may have different numbers on each coil if used in doubles.

Coil Diameter: 1/2" wide spring 
Number on Coil: Number is embossed on the side this determines the strength of the balance. 
Plastic balance shoe: 1-1/4" Wide and 19/32" thick (almost 5/8")

Note: This is thicker than similar products.
Please pay attention to dimensions and additional images.
This will not fit in the 17/32" opening.

Priced and sold each.