... ,500; 7) Vertical magnification:10,20,50,100,200,500,1000,2000; 8) Pick-up arm length:150mm; 9) Stylus length:22mm ... force:0.02-0.06N; 13) Stylus leading/trailling:≤77°(up)/≤88°(down). 10. Surface roughness measuring system: (1) Measuring range: 16 ... distribution--tp curve, tp curve and data (9) Vertical magnification: 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000 ...