Ready for action! The turntable is firmly clamped to the kitchen table. The ball head is used together with the spirit level on the camera to check everything is maintaned at right angles. The paper scale pasted to the base of the ball head has two diametrically opposed marks so that its position can be positioned exactly on the center line of the turntable when moved back and forth.

The marker pen standing upright on two little boxes represents the "near" mark for the transit check procedure - see following images!