These turrets are designed to work alongside your range finder or range finding binoculars with built in ballistic solver that offers a solution in clicks. 

Single turret clicks are indicated on the turret with short lines around the base, 5 click markings are indicated with longer lines and smaller text above, 10 click markings are indicated with a longer line and full size text above.

Each full rotation contains 50 clicks.

With the factory zero stop installed, there are generally 45 clicks available.

To achieve 2 revolutions of the turret the factory zero stop must be removed.  See How to Remove Factory Zero Stop. 

It may also be necessary to use a tapered scope base on your action or scope rings that are fitted with offset inserts to get to 2 full revolutions of your turret.