Door jamb positioning tool

A jig for positioning door jambs for installation to a constructed doorway comprising:

• a base template having a length, a width, and a height, and a surface area, the base template including side walls formed along the length of the base template material creating the height dimension;
• a first pair of board locator pins spaced apart and parallel to one another mounted on the base template above the top surface of the base template, a pattern of the locator pins centered on the base template relative to the length of the base template;
• a first pair of notch patterns disposed at opposing ends of the base template in mirror image to one another and aligned horizontally, each notch pattern adapted to conform to a step profile of a door jamb on one side of the constructed doorway;
• a pair of slots placed through the surface area of the base template, the slots spaced apart and held parallel to one another, the pattern of the pair of slots centered relative to the length of the base template and the pattern of the board locator pins;
• an alignment rail having a length, width, and height, the alignment rail including a side wall along one edge, the alignment rail adjustably mounted on the base template at the pair of slots using nut and bolt fasteners;
• a second pair of locator pins spaced apart and parallel to one another mounted on the alignment rail a distance above a top surface of the alignment rail, the pattern of the locator pins centered on the alignment rail relative to the length of the alignment rail, the second pair of locator pins having same dimensions and spacing as the first pair of locator pins;
• and
• a second pair of notch patterns disposed at opposing ends of the alignment rail in mirror image to one another and aligned horizontally, each notch pattern adapted to conform to the step profile of the door jambs positioned for installation.