Photonics Laser Measurement Instrument Surface Roughness Measurement Instrument Hydraulic Press Industrial Oven Blast Machine Lathe and Turbo Mill 　Model : SJ-301 　Measurement Scope : 0~300um（12000uim） 　Measurement Pressure : 4mn（0.4gf   　Parameter :Ra, Ry,.... 　Cut off: λc：0.25，0.8（mm） 　Resolution : Minimum 0.001um 　Amplification rate : 100000倍   © 2007 YI TSAI ENTERPRISE CO.,LTD. All Rights Reserved.. TEL:886-4-2335 7675‧FAX:886-4-2335 8079‧E-mail:yitsaico@ms64.hinet.net