Eiqht Quater, what's that?
It is a measurement of wood thickness.
It usually refers to rough cut lumber. If the lumber is finish planed,
it would be listed in 'inches', like 2 inches. The numbers refer
to fractions. Eight quater ( 8 / 4 ) means the wood is eight quaters
of an inch thick, or 2 inches. Six quarter would be 1.5 inches thick.
For the seat of a Windsor chair, I
start with a kiln dried board that is 2 inches thick (8/4). I want
the seat to be completely dry and the thickness of 2 inches gives
the strength needed for a seat.