Abstract: A pressure capsule is shock mounted in a pressure chamber formed within a metal housing and is isolated from the environment of the pressure to be sensed by a sealing structure which is a part of the capsule mounting apparatus. The capsule includes a pair of electrical leads which extend in sealed relation into another part of the housing so as to be isolated from the deleterious effects of moisture and electric fields. The pressure chamber includes a fluid passageway which connects both sides of the pressure transducer to the pressure being sensed and includes radially extending and axially extending portions in the sealing structure. The chamber is formed by a pair of plates, each of which includes a recess and one of the plates is mounted against shoulders on the other plate to minimize assembly pressure and warping of the pressure capsule.

Abstract: A hand tool having a handle and an output member mounted for rotation relative to the handle. An actuating member is mounted for rotation on the handle, and a reduction gear couples the actuating member to the output member. The reduction gear comprises a driving pinion, a restraint member permitting gyration of the pinion relative to the handle but preventing rotation thereof about its own axis, and an internally toothed annulus coaxial with and affixed to the output member and driven by said pinion. The actuating member is coupled to the pinion to cause gyration of the pinion and rotation of the output member when the actuating member is rotated relative to the handle. The tool can be used for making either coarse or fine adjustments.