Abstract: A boat keel tool which is designed to check the alignment of a keel with the center line of a boat and simultaneously measure and check the cross sectional surface of a boat keel from the lead edge of the keel to the trailing edge of the keel.

Abstract: A miniature telephone jack with a molded housing especially adapted for use on printed circuit boards in which spring metal contacts grasp an inserted plug at the proper locations along its length with balanced, firm forces even though the contacts are all inserted from one side of the housing and have lugs extending therefrom through holes in the other side of the housing to make contact directly with a circuit board. The spring metal contacts include specially designed barbs which fit in slots molded on the sides of the housing to lock them in place.

Abstract: A molded electrical jack housing adapted for mounting directly on a printed circuit board in which the electrical contacts are all inserted from one side of the housing and have connection lugs extending through the opposite side of the housing and in which the electrical contacts are formed from spring metal material and shaped to have tabs which rest on special plateau areas formed in the housing.