Manual and automatic optical square

The invention discloses a manual and automatic optical square. A plurality of adjusting screws of the manual and automatic optical square respectively penetrate in a plurality of kidney-shaped holes with angles of corners of 5 degrees, so that a toothed plate seat is connected with a transitional plate; rotating space with the angle of 0-5 degrees is formed between the transitional plate and a lower box; the function of the automatic optical square and the function of the manual optical square can be transformed by tightening or releasing the adjusting nut; tool changing time can be saved; and the manual and automatic optical square is convenient to operate. By using the manual and automatic optical square, adjustment and machining at common angles (such as 0 degree, 90 degrees, 180 degrees and 270 degrees) can be performed quickly, namely, the function of the automatic optical square can be fulfilled, and the machining efficiency is guaranteed; and moreover, manual fine adjustment can be realized, machining at special angles (such as 6.5 degrees and 213 degrees) can be performed, namely, the function of the automatic optical square can be fulfilled, the automatic optical square and the manual optical square are not required to be prepared simultaneously, the cost is greatly reduced, and the machining efficiency is improved.