Specifications for the Topcon ES 55 5 Second Reflectorless Total Station General Weight 12.3 lbs (5.6 kg) Dimensions 7.5 in x 6.8 in x 13.7 in (19.1 cm x 17.4 cm x 34.8 cm) Warranty 2-year Protection Class IP66 (dust proof and powerful water jets and heavy seas resistant) Tripod Thread 5/8 x 11 in. Internal Memory 5,000 points Software On-board Guide Light yes Angle Measurement Accuracy 5-second Distance Measurement Unit of Measure (distance display) m/ft/in. EDM Accuracy (Precision) ±(2mm 2ppm x D) for prism; ±(3mm 2ppm x D) for no prism Minimum Reading 350 m (1,148 ft) Tilt Sensor/Compensator Range ± 6 Type Dual axis liquid Battery/Power Power Source Rechargeable Li-ion battery Battery Life 15 hours Battery Life Alert yes Voltage 7.2v Optical Plummet Magnification 3x Level Circular Bubble Vial 10 minutes per division/(2 mm) Telescope Length of Tube 6.7 in (17.1 cm) Image Erect Diameter of Objective Lens (Aperture) 1.9 in (48mm) EDM Magnification 30x Field of View 1 degree 30 arcmin Resolving Power 2.5 arcsec Minimum Focus Distance 1.3 m (4.3 ft) Reticle Illumination 5 brightness levels Reflectorless yes Display and Keypad Type Graphic LCD Sides Single Keys Alphanumeric Backlight yes Pixels 192 x 80 Temperature Operating -4Fº~140ºF (-20ºC~60ºC) Applications Surveying and Construction yes Mapping and GIS (geographic information systems) yes Utilities yes Environment Studies yes Geomarking yes Archaeology yes Accident Reconstruction yes Measurement Range (under fair weather conditions) Single Prism 4,000 m (13,123 ft) No Prism 350 m (1,148 ft) Mini Prism 500 m (1,640 ft) Reflector Sheet 500 m (1,640 ft) Functions Coordinate Measurement Point yes Angle and Distance Stake Out yes Stake Out Line yes Offsets yes Missing Line yes Remote Elevation yes Resection yes Area Calculation yes Measurement Time Fine 0.9-second Rapid 0.7-second Tracking 0.3-second Laser Pointer Class Coaxial red laser using EDM beam Interface Pin Port RS-232C
