Easson ES-12B LCD DRO kit 3 axis digital readout LCD Monitor + 3pcs GS10 5um 50mm-1000mm linear scale optical encoder ruler. Package includes 1 PCS X ES-12B DRO 3 PCS X GS-10 scale A set of mounting accessories Manual Specifications Supply: DC 5V Input voltage: AC110V & AC220V option (Pls inform after placing order) Supply Voltage Fluctuation: Not to exceed +10% of the operating voltage Max Power Consumption:20 VA Operating Temperature: 0’C – 45’C (32’F – 113’F) Operating Relative Humidity. Glass Scales Specification (GS-10 model) High Precision Etched glass Resolution : 5um (0.005mm). 0002 inch Signal : TTL SQUARE WAVE Grating pitch: 0.02mm (50LP/min) Accuracy: ±0.005 mm or 0.0002 (at 20 deg C) Reference marks at interval of 50mm Response Speed: 60m/min or 40ins/sec Cable length: 3 Meter (about 9 feet).