가공된 금속소재 표면의 거칠기를 측정 B. Specifications 1. Hardware 1-1. Drive unit 1) Tracing length : 60mm or longer 2) Tracing speed : less than 0.1 ～ more than 0.5mm/s 3) Repeatability of starting point : 0.05mm or shorter 4) For lateral measurement tracing or better 5) For axial and transverse(90°) application or better 6) Straightness accuracy : 0.2㎛/60mm or less 7) X-axis scale accuracy : 1.0㎛/60mm or better 8) Resolution X-axis : 0.1um or less 1-2. Roughness Stylus pick-up 1) Measuring range : ±250㎛ or more 2) Stylus tip radius : 2㎛ or smaller 3) Linearity deviation : Din 4772 class 1 or better 4) Measuring force : 0.9mN or less 1-3. Computer system 1) CPU: Intel pentium Ⅳ 2.26 GHz or better 2) Main memory : 512MB or bigger 3) HDD : 40GB or bigger 4) CRT : 17“ TFT LCD or better 5) CD-ROM : 48X or faster 6) Printer : HP Deskjet 5740 or better