ections to test for wind, and that :i board only as long oi as wide as the plane is long can be tested in tlii>- way. The tiy-s(piare or any stiaigiif e<lge may be used for the same |iiii|!)se. Fig. Id.). If there be any wind in the board, this should at once be taken out of one face by…
Woodwork
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
