surface roughness plates for tactile and visual comparison
comparison range: Ra values 0,05 - 12,5 μm
comparison range AA: 2 - 500 µ
ISO-class: N2 - N10
The kit included 30 surface roughness plates of the 6 most important machining methods: Turning, Vertical Milling, Horizontal Milling, Plain Milling, External Grinding, Flat Lapping
the individual surface roughness plates are 22 x 10 mm