The rear base with mark 1 is one foot 9 inches long, 4 inches wide and 3 inches high.
The front base with mark 2 is 9 inches long, 4 inches wide and 3 inches high.
The long piece which joins the two bases, marked 3, is 3 feet long (including joints), 3 inches wide, and 2 inches high.
The large uprights marked 4 are 1 foot 6 inches long including joints, 2 inches wide, and 3 inches deep. They are fixed on the back base 9 inches apart. The holes in which the axle rests are made 2 inches below the top. These holes contain bearings of thin iron plates to secure easy motion of the axle. The bearings are kept open at the top to allow access of oil through a slanting hole bored on the outward sides of both the uprights, one inch above the axle.
The small uprights marked 5 are 9 inches long with joints 1½ inches wide and 1½ inches deep, with holes 4 inches below the top to contain the leather bearings which bear the spindle. They are fixed 3 inches apart on the front base and are connected together 2 inches above
