Torque=Weight(display)xDistance to Center of Gravity x Cosine(Angle)

. Distance to CG is 1/2 of the length if the weight is evenly distributed  

. The angle is the most torque required to hold, otherwise, please assume zero degree

Example: 

Weight=3 lb 

Length=10 inch 

Distance to Center of gravity=5 inch(evenly distributed) 

Angle: 45 degree 

Torque=(3lb)x(5in)x(cos45)=10.61 lb.in