Legs are made from flat stock
Strong, flexible bow spring
Fulcrum stud is hardened and has a smooth bearing surface
High-grade steel construction
Quick-adjusting automatic-closing spring nut
Caliper Type: Spring Joint - Inside; SAE/Metric: SAE/Metric; Size: 8; 200mm; Length: 8".

High-quality spring ensures smooth opening and closing, enhancing the overall action of the caliper
Flat-leg design results in a measuring capacity approximately equal to the combined length of the legs
Caliper Type: Spring Joint - Inside; SAE/Metric: SAE/Metric; Size: 12; 300mm; Length: 12".

Constructed of polished tool steel
Firm and rigid friction joint
Can be adjusted to desired tension
Actual capacity is 1/3 greater than leg length
Caliper Type: Firm Joint - Outside; SAE/Metric: SAE/Metric; Size: 11.8; 300mm; Length: 12".

Constructed of polished tool steel
Firm and rigid friction joint
Can be adjusted to desired tension
Actual capacity is 1/3 greater than leg length
Caliper Type: Firm Joint - Inside; SAE/Metric: SAE/Metric; Size: 11.8; 300mm; Length: 12".

Bow spring ensures uniform tension over working range
Centrally mounted adjustment screw offers finer setting, than firm join type
Caliper Type: Spring Joint - Outside; SAE/Metric: SAE/Metric; Length: 10; Material(s): Steel.