APS Manual

The AngleStar Protractor Systems are economical angle measurement devices. A system consists of a compact gravity-referenced clinometer connected to an associated liquid crystal, (LCD) readout. The AngleStar clinometer is a precision measurement sensor that provides wide angular range with good linearity. Its small size and rugged construction make it adaptable to the most difficult installations. The readout contains a standard nine-volt battery, which provides power for the sensor and display system. Clinometer angular position is displayed digitally to within 0.1 or 0.01 of a degree. The readout may be remotely located up to 200 feet from the sensor, making the system ideal for a wide variety of applications. Note: Clinometers and readout units are matched at factory calibration and final test to yield performance specifications noted. Mixing clinometers and readout units without recalibrating them will result in a sub-standard performance. PREPARATION FOR USE The AngleStar Protractor System can be powered by either an internal or an external power supply. A 9-volt battery is included to excite the system internally. To access the battery compartment, snap apart the readout housing at the groove around the edges by inserting and twisting a coin in the groove below the display window. After replacing the battery, reassemble the readout halves. The system may be externally powere