---
title: DR 130 Surface Roughness Tester
url: https://shop.opti-tech.ca/product/dr-130-surface-roughness-tester/
date: 2024-07-24T20:10:28+00:00
modified: 2025-12-30T19:40:06+00:00
lang: en_US
---

# DR 130 Surface Roughness Tester

DR 130 Features:

- Metal shell, Pocket-size.
- High contrast OLED display
- Four parameters: Ra, Rz, Rq, and Rt are generated by one measurement
- USB output for recharging
- Protective shield for protecting the sensor from damage
- Works on a li-on rechargeable battery with a long working time
- Auto shutdown