SILVERBOLT

metal pipes; metal adapters for use with hydraulic and pneumatic systems

International Class 9:electronic valves for controlling gas or fluids; measuring instruments and apparatus, namely, pressure gauges, absolute pressure gauges, differential pressure gauges,thermometers not for medical use, thermocouples, flow rate meters, humidity sensors, portable electronic recorders for measuring and recording multiple voltage, current and thermocouple readings from various transducers, acceleration sensors, distance measuring apparatus, angle finders, sensors for determining velocity, acceleration and temperature, gauges for measuring electric charging levels, gauges, namely, pressure gauges, level gauges for vacuums, barometers, altimeters,thermometers, thermo hydrometers, hydrometers, gauge sensors,namely, industrial calibration sensors, flow control units, namely,liquid level sensors, electrical transducers, diaphragm seals for measurement of temperature or pressure, which attach to thermometers or gauges and isolate the instruments from direct contact with corrosive liquids, electroacoustic transducers, control instruments, namely, control valves for regulating the flow of gases and liquids, pneumatic relays, electric contact sensors, and position regulators; electro technical and fluidic instruments and apparatuses, namely, power supplies, amplifiers, and power switches; gauging and calibration instruments, namely, deadweight testers; electrical switches, particularly pressure switches, limit switches, level switches, contact-free operable magnetic switches,optically, inductively and capacitively operable switches, electrical switches equipped as swim switches, operation sensors, indicators for metals being available; electric switching instruments for level control of liquids on the basis of the electrical conductibility of the respective liquids; electric and electronic control instruments for revolution count, revolution control, operation shut-down control,anti-rotation control, charging level display, limit control, leading-edge control, machine control and machine supervision, namely,revolution counters, revolution meters and tachometers; electric and electronic control instruments, namely, time relays

calibration of measuring instruments