JimDobson Well-Known Member Joined Sep 11, 2013 Messages 230 Reaction score 163 Location South Coast of New South Wales Australia Oct 24, 2020 #1 Bought a cheap Chinese Digital Micrometer, here's a bit of a review -
BaronJ Grumpy Old Git. Joined Dec 6, 2013 Messages 1,401 Reaction score 847 Location York, North Yorkshire Oct 25, 2020 #2 Hi Jim, The key is for removing the battery cover to replace the 2032 battery, and the ball cap is for measuring tube wall thickness !
Hi Jim, The key is for removing the battery cover to replace the 2032 battery, and the ball cap is for measuring tube wall thickness !