I buy 2 of these very small trimming platforms for optical experiments with lock in amplifiers. The quality is more than expect for the price. These four axis platforms allows to set x, y, z axis settlement within +-7 mm, and R +- 7.5 degrees rotation. For most experiments enough. Larger ranges are on the market available but for 10 times in price. Very fast delivery, 7 days to Switzerland.
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