Abstract: A simple yet effective manner and system for electronic scanning of construction drawings to obtain the number of various symbol designated facilities such as electrical and plumbing fixtures. Representative symbols are first abstracted from the drawing, are displayed on a monitor and reduced by an operator to their essentials and are then electronically compared with symbols throughout the drawings, with each facility being abstracted and displayed on a monitor for inspection by the operator before being passed to memory for inclusion in a tally of similar fixtures or facilities.

Abstract: The bow sight device includes an electro-mechanical motor operated cross-hair sight for use with compound bows. The electro-mechanical motor operated cross-hair sight includes a sight window. A verticals, mechanically adjustable cross hair and a horizontal, motor-operated cross-hair are disposed within the sight window. A calibration of the cross hairs allows for a precise and quick adjustment of the intersection point in order to provide a dead center reference point.