QuartexQ-80 Quartz Clock Movement 1/4†Maximum Dial Thickness 11/16" Hand Shaft Length

Is quartex a company? or just a brand owned by someone else? who owns quartex?

What is the meaning of dial theckess?

How does the minute hand attach? My unit has a minute hand that has a narrow rectangular opening that doesn’t fit any portion of shaft?

what are the physical dimensions of the unit please? Seems like such an obvious question that it would be listed.