Lutron , Raytek , Time make with Reasonable price

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measures wind speed by measuring the speed of the fan(vane), whose axis is parallel to wind direction, using a revolution counter and converting it into readable format.

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Lutron LX-101 Digital Lux Meter Range: 0-50000 Lux comes with an operation environment of 0-50? C and an accuracy of ±5%+2d. The digital lux meter has a lumen output of 0-50000 LUX. It comes with a display of 13 mm ( 0.5 inches ) LCD and a resolution of 1-100 Lux.

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Sound level meter measures the sound level in logarithmic scale. There is a diaphragm in the microphone which responds to changes in air pressure caused by sound waves. This sound pressure is converted into logarithmic scale and displayed.

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metrix Digital Stroboscope

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Digital force gauges are force measuring devices with built-in load cells and used to measure compression, tension, peel, or coefficient of friction. ( See usage examples of digital force gauges in video> ) Digital force gauges feature data management on a PC and detailed analysis based on the data.