Sightron S111 10x42 MMD query.
I am currently using this scope on my EV2 for HFT. I understand that the turrets can be re-set to zero by slacking off the three grub screws but I can't work out what size Allen key I need for the job.
Each screw is set in a deep recess making it difficult to see. I have tried metric and imperial and the best I can tell is that it's somewhere around 1.5mm.
Can anyone help with with the size please?