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Pocket-sized RPM meter
For carrying out non-contact rpm measurements: the testo 460 RPM meter is ideal for RPM measurements on fans, crankshafts and motors. It comes with selfesive r-adheflective markers.
The testo 470 RPM measuring instrument carries out rpm measurements on motors, shafts, fans, etc., but that’s not all. With this handy instrument, you can also determine speeds and lengths.