Digital leveling instruments, balloon theodolites, theodolites, planimeters, digital planimeters, distance measuring apparatus, measuring or testing machines and instruments using laser, echo sounder, clinometers, micrometer station pointers, actinographs, alidades, all-weather measuring and recording apparatus for wind speed, snow depth and water level, meteorological machines and apparatus, weather indicator, water level measuring sensor, apparatus for measuring water level changes, level measuring machines (for surveying), nautical apparatus and instruments, sextants, marine vane anemometer, anemometers, recording tide gauge, ocean current meters, current meters, barometers, directional compasses, measuring or testing machines and instruments, personal digital assistance, navigation calculator, computer program for water level measurement, computer program for personal digital assistance, computer software, computers, binoculars, periscopes, microscope, range finders, reflectors, prisms, telescopes, optical sensors, image sensors, display monitors, global positioning system, radio communication machines and apparatus, radio beacon machines and apparatus, radio direction finders, radar machines and apparatus, integrated circuits, semiconductor memories, diodes, quartz resonators, quartz crystal oscillators, phase modifiers, photocopying machines, drawing or drafting instruments and apparatus, time recording devices.;
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