A hand held tool includes a slotted handle having a jaw end, a medial
section, and a gripping end, the medial section including a slot having a
gear tooth rack. An operative handle has a pinion gear end and a gripping
end, with pinion gear being fixed with respect to the operative handle,
and the pinion gear being positioned in the slot and having a toothed
portion and a non-toothed portion. An operative jaw is slidably mounted
with respect to the slotted handle to cooperate with the jaw of the
slotted handle to group a workpiece, the operative jaw having one or more
guide mechanisms to maintain the orientation of the jaw with respect to
the slot as the jaw slides and as torque is applied to the operative jaw
when a workpiece is gripped.