Cast iron base plate, rounded all around.
Dimensions: 187×90 mm
Opening: 41/46×45/53 mm

At the back in the cast center: Mounting block 24×34×31 mm, height 55 mm, with 11×5 mm vertical slot for the blade and a 9 mm hole at the back for a 69 mm long, 8 mm clamping screw with square hole, WHITWORTH thread 18 G 5/16", secured with wing nut (No. 7).

Two turned wooden handles, each 10.5 cm long, diameter 1.5–2.9 cm, screwed from below to the base plate.

Blade: 12 mm, angle ≤ 10°, top bevel 32°