Long description

Point of balance for three means. The figure shows a horizontal arrow pointing to the right. Four suitably spaced points are marked on it, 1.3, 1.6, 1.7 and 1.9. Immediately below 1.6 there is a solid arrow head pointing upwards, which is the fulcrum or balancing point of the balance. Suspended from the point marked 1.3 is a pile of 2 discs, suspended from the point marked 1.7 is a pile of 3 discs and suspended from the point marked 1.9 is a single disc.