GURLEY

ENGINEERING INSTRUMENTS AND SURVEYING INSTRUMENTS-I. E., THEODOLITES, TRANSITS, LEVELS, COMPASSES, ALIDADES, PLANE TABLES, LEVELING RODS, STADIA RODS, RANGE POLES; ACCESSORIES AND FIELD EQUIPMENT FOR SURVEYORS-NAMELY, HAND LEVELS AND PLUMMETS; HYDROLOGICAL INSTRUMENTS-I. E., WATER LEVEL RECORDERS, WATER LEVEL INDICATORS, CURRENT METERS AND HOOK GAGES; TESTING INSTRUMENTS FOR PAPERS AND TEXTILES; STANDARD WEIGHTS AND MEASURES; METEOROLOGICAL INSTRUMENTS-I. E., ANEMOMETERS, WIND DIRECTION INSTRUMENTS, WIND DIRECTION AND VELOCITY RECORDERS AND PILOT BALLOON THEODOLITES; AND OPTICAL INSTRUMENTS-I. E., BORE INSPECTION TELESCOPES, COLLIMATORS AND TELESCOPES; LENSES, PRISMS, MIRRORS, FLATS AND RETICLES