i can't see that having a calibration certificate for a rear stainless cage will be much good myself but hey ho 

That's taking OCD to a whole higher level 😂😂😂

A mis-post I suspect   

Hope so, coz if cages need calibration, I am stuffed because I welded my own during my 3rd welding lesson 

Any calibrated device should be confirmed via certified device before use. If not, it's pointless.
Just saying.
Paul

I'm guessing this post was meant for mine about the torque multiplier? 🤔

It was 
Soz