Drilled Ball Set, 1inch Diameter, set of 12, erfect for conducting own pendulum experiments, 3mm hole is drilled down the center of each ball, Comes in a plastic container with foam padding to hold the drilled balls firmly in place
Galvanic principle, IP54 Grade with 30 sets data memory, Galvanic DO electrode, no warm up needed, save time,Auto/manual endpoint, recall last calibration data,Easy to calibrate
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