9×7 cm PCB board refers to a printed circuit board (PCB) with dimensions of 9 cm (90 mm) in width and 15 cm (70mm) in length.
Size:7×9cm
Hole spacing:2.54mm
Plate thickness:1.2mm
Aperture:1.0mm
Number of holes:30×24=720 pieces
Plate:94HB bakelite plywood