Abstract: A cutting tool provides a device for cutting a plate glass corner. The structure includes upper and lower blades which are opened and closed to cut the plate glass. The upper and lower blade edge lines mutually oppose each other to form a cutter body having a scissor shape. The upper and lower blade edge lines also coincide with the planned cut line of the corner section of the plate glass.

Abstract: A ruler main body is formed by attaching the respective interlayer plates to both surfaces of a center plate, a ruler section is formed at the corners of the ruler main body, a position determining plate is established which extends from the center plate along two sides of the ruler main body which lies between the ruler section and projects beyond the surface of the ruler main body, and position determination is performed by abutting the position determining plate to two edges which the corner of the object to be cut lies between.

Abstract: A glass machining apparatus is provided to machine large-scale glass sheets. The apparatus includes a base plate with an operating use hole, a functional section support with a base end section that pivots on the base plate, a glass machining disk at the front end section of the functional support section, and a drive motor on the functional section support that drives the glass machining disk. The functional section support moves up and down about a pivot support in the center of the base end section and can be variably positioned in any of a non-operating position spaced above the base plate, a first operating position that is adjacent the upper surface of the base plate, and a second operating position that passes below the base plate through the operating use hole.