How to adjust differential's carrier bearings without any special tool

This differential unit comes with threaded adjusters for both carrier bearing. The car manual talks about using dial and torque gauges to adjust the bearings preload, but I don’t have any of those tools. I have heard about adjusting both sides by counting the adjusters turns, then put in the gearbox, place it vertical and further adjust the adjuster that’s on top, so the weight of the unit plays some role here. Then put it vertical over this side and readjust the other adjuster. Turn one of the axles while trying to stop the other and check there shouldn’t be any lateral play and little “turnwise” play. Any suggestions?

Could I use a normal torque wrench to measure this?