On a white butcher's scale there is a small video monitor which reproduces the image of the scale with two human hands alternatively pressing it with one finger. Every time one of the virtual fingers presses the virtual scale, the physical scale is activated. The spectator realizes this at the sound produced by the physical scale in motion and by the movement of the "dial" - a cylinder indicating the weight, which can be read on both sides, the butcher's and the customer's.