The particularly robust model set has the crankshaft running on ball bearings. The machine is equipped with two motors that can be operated together or separately by means of two switches. The machine is supplied with a solenoid valve and in the lower part there are two taps which allow the regulation of the water flow separately on the two abrasive discs. The model trimmer can mount carborundum discs (usable on both sides) or diamond discs.

The machine is also equipped with a goniometer and graduated model press.

A double protractor is available upon request.