I was faffing around measuring some cases and stuff last night when my fairly venerable digital calipers started to give some very odd readings shifting from metric to imperial at random and showing manifestly incorrect lengths. I swapped the batteries a couple of times for fresh but no improvement so I have decided to buy some new ones.

I know I can pick a set up for less than £10 but suspect I may need to pay more so I would welcome recommendations for a good reliable and adequately accurate set that will last for years and maintain accuracy. I would prefer digital.