型号               测定长度                    最小刻度                          误差                        全长

PITA10        100mm                      0.05mm                        0.05mm                   171mm

PITA15        150mm                      0.05mm                       0.05mm                   237mm

PITA20        200mm                      0.05mm                       0.05m m                    287mm

PITA30         300mm                   0.05mm                         0.05mm                    409mm