- Standard: BS3123
- Traditional hand tools for
scribing and measuring
- Manufactured from
polished tool steel
- A large headed nut
and screw assembly
provides a firm and
rigid friction
joint with no play
- The sizes listed
are the effective leg
length which is
measured from
the joint assembly
- Firm joint calipers
capacities are
generally 1/3 greater
than the effective
leg length
