Hardened and tempered bow springs assure uniform tension without side play. Adjusting screw has self-seating washer and nut for quick adjustments. Legs made from special caliper steel with hardened points. Used in marking circles, tracing contours and transferring measurements. Conforms to government specifications GGG-C-95.
|Leg Length||:||6-1/4 in|
|Span Range||:||0 to 6 in|