1.Made of extra strong carbon fiber composites.
2.Functions:Zero setting at any position;metric/inch system conversion at any position;manual OFF&ON or auto OFF.
3.One 1.55V SR44 battery can last about 12 months.
4.Can be used to measure magnetic objects,free of hurting when measuring ;and can be used in schools,laboratories,carpeentry,farms and DIY at home and so on.
5.Inch fraction display for option,better performance:no negative zero,no halting phenomena.
PLASTIC DIGITAL CALIPER