Large screen, display clear Measuring speed Absolute and relative measurements Preset the actual position value Shell aluminum oxide ceramic space technology, strong. Anti-scratch Optional automatic and manual shutdown Large capacity, 3V environmental protection lithium batte Automatic and manual shutdown Count direction conversion Metric conversion The models: Resolution:0.01mm/0.0005" Models Range Resolution Accuracy Repeatability ACE-312 0-12.7mm 0.01mm 0.02mm 0.01mm ACE-325 0-25.4mm 0.01mm 0.02mm 0.01mm ACE-330 0-30.0mm 0.01mm 0.02mm 0.01mm ACE-350 0-50.8mm 0.01mm 0.02mm 0.01mm ACE-3100 0-100.00mm 0.01mm 0.02mm 0.01mm Resolution:0.001mm/0.00005" Models Range Resolution Accuracy Repeatability ACE-3121 0-12.7mm 0.001mm 0.003mm 0.002mm ACE-3251 0-25.4mm 0.001mm 0.005mm 0.003mm ACE-3301 0-30.0mm 0.001mm 0.005mm 0.003mm ACE-3501 0-50.8mm 0.001mm 0.006mm 0.003mm ACE-31001 0-100.00mm 0.001mm 0.009mm 0.002mm