- The Saeco Lead Hardness Tester is a precision instrument that accurately determines the hardness of bullet casting alloy
- It measures alloy hardness by determining the depth of penetration of a hardened steel indenter into a cast bullet.
- Hardness of a bullet is read from Vernier scale.
- The Vernier scale is calibrated in arbitrary units with pure lead as 0 and linotype as 10.
- This unit works for bullets up to 45 caliber