Falling Bodies Apparatus 
L-section launcher with holes for locating two 19mm diameter steel balls which act as projectiles. The launcher is released by push button and projects one ball forward while allowing the other to fall freely. The launching mechanism is mounted on a wooden block (size: 180 x 60 x 30mm) which may be bench clamped and has a convenient storage pocket for the balls. Apparatus comes complete with two steel balls.