images provided for illustrative purposes only
R77W Dot Array, 0.25mm dots at 0.5mm pitch, 50mm x 50mm x 3mm
Dot Array, 0.25mm dots at 0.5mm pitch, 50mm x 50mm x 3mm
Array of 0.25mm diameter dots at 0.5mm pitch
White glass, 50mm x 50mm x 3mm thick