1.  20 parameters: Ra, Rz, Rq, Rt, Rp, Rv, R3z, R3y, Rz(JIS), Rs, Rsk, Rsm, Rku, Rmr; Ry(JIS)=Rz, Rmax=Rt, RPc, Rk, Rpk, Rvk, Mr1 and Mr2

2.  Compatible with 4 standards of ISO, DIN, ANSI and JIS

3.  4 filtering mothods of RC, PC-RC, GAUSS and D-P

4.  Built-in li-on rechargeable battery, up to 20 hours continuous work

5.  Large capacity data memory of 100 groups of original data and waveform

6.  Auto shudown

7.  Canbe connected to PC or printer with powerful software