Iron plate with a rim, three recesses, three 19 mm sleeves with a 9 mm slot for the iron, 6.5 mm threads, and 35 mm long 6.5 mm screws. A nut Ø 9/16 mm with a guide ring for the iron gap regulates the iron depth, and the oval iron ring, 40/50x32x16 mm, with an 8 mm clamping screw, holds the iron. Two wooden ball knobs with countersunk bronze nuts fit onto all three screws. Iron adjustment oval clamp and wooden handles can be swapped onto the three screws four times. The middle sleeve has a slot at the front and back, the outer sleeves have both slots on the left side. This also allows for larger surfaces to be planed and their edges to be cleaned precisely.

Iron: 11 mm, slanted 85°, angled shaft 8x8 mm, with two 5 mm slots. Bevel on top 30°, angle: 5° = 35°

Mark: PRESTON E P MARK PATENT 1399 P