Proportional divider

A proportional divider comprising a pair of substantially elongate leg members pivotally interconnected to one another, each leg having a shaped distal end, said members being pivotally interconnected by a pivot assembly, said assembly being slidable along said members, said pivot assembly includes a first and a second substantially rectangular sides, each said first and second rectangular side is slidably connected to a respective one of said elongate leg members by a pair of flanges, said flanges and said rectangular sides forming a shallow U-shaped member, said first rectangular side having a first and second detent leaf located thereon, said second rectangular side having a first and a second detent receptacle located thereon, wherein said detent leafs and said detent receptacles interlock in a mating fashion, and whereby said leg members can be rotated about said pivot assembly at any point intermediate said distal ends.