9 Surveying, measuring [, checking and supervising ] apparatus, instruments and machines for measuring, regulating and controlling the behavior of abrasion and wear of lacquer, plastic, metal, rubber, glass, concrete composite, wood, and textiles; data processors and computers for use in the field of inspection of materials and surfaces; alarm apparatuses namely, alarms for the detection of surface impurity and material variation; testing apparatuses, not for medical purposes for testing of materials and surfaces, namely, plastic, metal compression, hardness and strength, glass, wood, paint, lacquer, concrete, and stone; diagnostic apparatuses, not for medical purposes, for diagnosing properties of materials and surfaces, namely, plastic, metal compression, hardness and strength, glass, wood, rubber, paint, lacquer, concrete, and stone; material-testing and surface-testing instruments and machines, namely, cement testing machines, surface roughness testing machines, plastic testing machines, surface abrasion testing machines, metal compression, hardness and strength testing machines; precision measuring apparatuses, namely, abrasion gauges, abrasion digitizers, friction gauges and digitizers