The Cup Counter Anemometer measures the run of wind past the Instrument over a period. The instrument consists of three semi-conical copper cups 127mm in diameter with beaded edges fixed to a central spider by three brass rods. The cups assembly is friction coupled to a vertical spindle, which is connected to a counter through gears. There is a small ball bearing at the top of the spindle and another ball bearing at the bottom.
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berapa harganya ya pak?
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