| MODEL | TR-110 / TR-310 / TR-220 |
| Parameters (μm) | Ra Rz Rq Rt Rp Rv R3z R3y Rz(JIS) Rs Rsk Rsm Rku Rmr Ry Rmax Rpc Rk Rpk Rvk Mr1 Mr2 |
| Assessed Graphic | Rmr curve, Roughness curve, Profile Curve |
| Filter | RC, PC RC, Gauss, D P |
| Sampling length (lr) | 0.25, 0.80, 2.50(mm) |
| Principle | Differential Inductance |
| Evaluation length (ln) | (1 5)L, L=sampling length |
| Indication accuracy | 0.001 |
| Indication error | Tolerance≤±(5nm+0.1A) A=Ra standard value |
| Repeatability | ≤3% |
| Power | Rechargeable lithium ion battery:3.7v, 850mAH |
| Working condition | Working temperature 40℃ Relative humidity:<90% RH |
