The Calibration Mandrel to gauge thickness at an adjustable depth -- maximum 6 cm. The mandrel can be adjusted both laterally and longitudinally with respect to its supporting shaft; moreover, it can be rotated from 0 to 90 degrees, and can also be used to carry out embedding for the drip stone.

Opposing mandrels inclined at 45 degrees to order chamfers and/or beveling of varying dimensions. Whenever it is necessary to carry out rounded profile edges, these mandrels, thanks to the use of specific diamond cone-trunk grinding wheels, greatly helped the following shaping made by the oscillating mandrels by carrying out the milling of the edge.

Oscillating mandrels of which the first two are ready to be equipped with cup-shaped diamond grinding wheels in order to carry out the shaping of the rounded profiles or the grinding to the flat, squared-off or inclined profiles. The other five mandrels are equipped with polishing and smoothing abrasive grinding wheels. If necessary, all the seven mandrels are equipped with abrasive grinding wheels.

New models, deriving from the LTH 721 M model with the addition of other mandrels, can be created if requested, according to Marmo Meccanica.

Circle No. 286