Suspension Springs for Mechanical Clock Movements

Light Duty: Used in smaller wall and mantel clock movements: 13008, 13010, 13016, 13025, 13035, 13037, 13039, 13047 & 13095

Medium Duty: Used with pendulums with 4 1/2" bobs. Can be used in clock movements: 13001, 13005, 13044, 13045, 13075 and 13088

Heavy Duty: Used with pendulums with bobs 6 1/2" or larger. Can be used in clock movements: 13049 & 13055