Abstract: A baseball pitching machine that is configured to precisely index and spin a baseball before pitching the baseball. The machine comprises a baseball spinner and launcher that is configured to spin the baseball using at least one spindle, and then launch or pitch the ball using air (i.e., pneumatic). Preferably, the position of the ball spinner and launcher can be adjusted in terms of position in both the x and y directions (i.e., both side to side, and up and down), as well as its angle. The baseball pitching machine is configured to be controllable such that pitches (in terms of type, location and velocity) can be changed on a pitch-by-pitch basis.

Abstract: A baseball pitching machine that is configured to precisely index and spin a baseball before pitching the baseball. The machine comprises a baseball spinner and launcher that is configured to spin the baseball using at least one spindle, and then launch or pitch the ball using air (i.e., pneumatic). Preferably, the position of the ball spinner and launcher can be adjusted in terms of position in both the x and y directions (i.e., both side to side, and up and down), as well as its angle. The baseball pitching machine is configured to be controllable such that pitches (in terms of type, location and velocity) can be changed on a pitch-by-pitch basis.

Abstract: A roof shingle placement tool is provided. The roof shingle placement tool includes a support member adapted to be disposed generally horizontally on a roof to be shingled. An indexing member is connected to the support member. The indexing member includes a plurality of equally spaced stops. The indexing member is adapted to be indexed upwardly along the roof with succeeding stops engaging a fixed reference point on the roof such that a uniform exposure distance is provided by the support member for succeeding courses of shingles.