I have a pair of micrometers, both used in my engineering shop as my own personal mics. Both in perfect working order. The Mitutoyo mics (model 293-832) are £65 posted, the Mahr mics (40 ewri) are £150 posted. Essential for engine rebuilds & maintenance. The Mahr set have a cracked screen, hence the big price reduction from new, but this does not affect the accuracy or integrity of the set. Both sets are accurate to 0.001mm (one micron) & in perfect working order in their own boxes. Mitutoyo set is still within calibration date until Dec 2023.