It is made of hardened stainless steel material: a.Hardened stainless steel main scale ; b.ABS plastic casing.Battery type: 1.5V LR44/SR44 battery (Not included)Functions1.Measuring faces2.Reference surface3.Slider clamp screw4. Scale5.Beam6. mm/in change7.Power on and off8. Zero setting9. LCD display10. Battery compartment