Based on our own experience, we find this non-contact tachometer to be a game-changer in Industrial and Scientific applications .The accuracy and ease of use make it a must-have tool for any motion analysis. The digital display is clear and the ergonomic design ensures comfortable usage. The only downside we could find is that it requires a steady hand to maintain consistency. Nonetheless, we highly recommend this product to anyone looking for a fast and reliable speed measurement tool!