There are 2 ways to measure roughness comparing roughness standard specimen and real goods. In case judging max height like JIS standard , sense of touch is more accurate, except very rough surface. Touching by tip of nail is more sensitive than by ball of finger. In case checking graze of surface, sense of sight is needed. Average roughness range visually and tactility perceivable is about 0.8S.
Internal new employee education employee Employee Use as a specimen confirmation sample with an education customer
On 2015-09-30 20:00:20
Since the standard piece currently possessed is the one that was purchased before, it is easy for beginners to display the new JIS display on the back side for old JIS display. It is easy to understand if there is a new JIS display and processing machine display on the back side. In the case of processing machine, cylindrical outer surface: for lathe, grinding machine, etc. For flat surface: It is easy to use if there are specifically filled pamphlets such as shaping plate, milling machine, face milling process and end milling process. It is on the machine design manual.