Mira de Codigo de Barras en Invar
1,lengght:2m;
2,The allowance of the whole staff length:≤±0.2mm/5m;
3,The allowance of the sacle space in meter: ≤±0.07mm;
4,The allowance of the sacle space in decimeter: ≤±0.04mm;
5,The score allowance: ≤±0.03mm;
6,The null point difference of a staff : ≤±0.06mm;
used for Kolida,Leica,Sokkia or Topcon
