Gilbert Gras

Apparatus for measuring the consistency or hardness of a material

Process and apparatus for making a numerical determination of the color, or of a change in color, of an object

Method of and apparatus for the measurement of at least one mechanical property of an elastic material

Apparatus for measuring the mechanical characteristics of a material such as living skin

Apparatus to register the quantity of sebum secreted by a skin

Verfahren und vorrichtung zur bestimmung der mechanischen eigenschaften eines elastischen materials

Apparatus intended for classifying the quantity of a fatty product found on the skin surface

Appareil de mesure de durete

Geraet zur beruehrungslosen, numerischen bewertung der farbe oder einer farbveraenderung eiens gegenstandes

DISPOSITIVO DI MISURA DELLE CARATTERISTICHE MECCANICHE DI UN MATERIALE PARTICOLARMENTE DELLA PELLE