the contact point on the contact bed the contact point on the platform could also include a spring system that allows for adjustment of the rocker assembly with respect to the platform and by a transmission line out to a circular contact ring 80 located on the bottom lip of the rigid platform the circuit is completed when the contact ring 80 on the platform 81 fig8 contacts the contact ring 73 on the contact bed 71 the completed circuit operates a solenoid 82 to stop the accumulator timer not shown the top surface of the contact bed 71 is concave as shown in fig8 to keep the rigid platform centered on the contact bed the concave surface prevents the rocker assembly 72 from 34 walking 34 uphill toward the edges of the contact bed 71 another possible embodiment employs four mounted and electrified ball bearings 91 at the center of the contact bed as shown in fig9 the bearings 91 are positioned to accommodate the rocker assembly thereupon as the platform not shown tilts the rocker assembly 72 rotates on top of the bearings 91 the bearings conduct a current to a contact point on the rocker assembly signaling an out of balance condition a particularly preferred embodiment of the present invention is shown in fig1 and 11 a partially cut away top view of the device is shown in fig1 the device 100 comprises a platform 101 and a base 103 a conductive strip 102 encircles the upper surface of the base 103 the width of the strip is greater than the spacing between a conductive circular outer flange 106 which encircles the perimeter of the platform 101 and a concentric ring of conductive interconnected whiskers.