Thanks for your answer. The hand wheel is horizontal and I dont have a torque wrench

Do you have a fish scale? It is a spring with a hook. You put your caught fish on the hook, and the weight of the fish stretches the spring. There is a pointer on the scale to read out how many kg the fish is.

You could attach a bar to the hand wheel that is 10, 20, or 30cm long. Hook the fish scale on the bar. Keeping the bar perpendicular to the fish scale, pull the fish scale horizontally and read how many grams or kg it requires to start moving. The length of the bar times the "weight of the scale" is the torque required.

For example, let the bar be 20 cm long. If the scale reads 1 kg, then the force is m * g = 1kg * 9.81 m/sec^2 = 9.81 N. Therefore the torque is 9.81 N * 20cm or 1.96 Nm. For the most accurate reading, fix the bar to the center, and to the rim.