Installing a Lathe DRO

How I installed a DRO to my Lathe. This DRO kit came from Aliexpress: https://www.aliexpress.com/item/10050... I got the 3 axis 1um scale set for approx £230, plus £70 for the slim 1um scale (additional item). My only complaint would be that the small scale I got for the cross slide appears to have significant non-linear error. This is apparently common in that the ones that don't meet spec are sold off cheap. Considering what I paid, it's to be expected.