Electronic measurement instrument, for use as an electronic rule, angle measurement device and spirit level, comprises a hand- held unit linked to a base unit via an antenna and receiver

摘要

Hand-held, rod-shaped, electronic measurement instrument comprises a housing, antenna and receiver, measurement point, alphanumeric display, operating elements, processor, clock, batteries and a base station. The latter comprises power supply, battery charger, spirit level, processor, alignment means and clock. Distance measurement is based on infrared, radar, or ultrasound.