The Zero-Point Mounting System requires all fixtures to have Locating Posts installed underneath. Fixtures should generally have one Zero-Point Locating Post and one Relieved Locating Post (which work together similarly to a Round Pin and Diamond Pin, to prevent redundant location). Floating Posts can be added as required to provide additional clamping force without location. All posts have a precision-ground locating diameter and base diameter. The posts' radial groove allows the locking balls of a Speedy Clamping Module to engage for pull-down clamping.