STT-shaft twist tester NO

STT R100 NO and STT R150 N

Fast and easy visualization of twist structures


Application background

These convenient devices STT R100 NO and STT R150 N are especially suitable for the application directly in the production environment. By placing the STT on the surface of the test object existent twist structures are immediately visible. When the shaft is fixed on a V-block or between rotatable centers, by rotating the shaft, local dependency of the sealing surface structure can be easily and quickly tested. The device STT R100 NO is designed for shaft diameters from 5 mm to 200 mm. The device STT R150 N enables to test shaft diameters up to 300 mm. Due to the compact and robust aluminum housing and the battery powered laser the device is ready for operation even under harsh production conditions. Additionally, the device STT R100 NO provides the possibility to connect a tripod (1/4” 20 UNC).

Optional Accessories

Battery charger for STT
  • Battery charger for STT
  • Charger + 2x battery
  • Voltage (batteries): 3.6 volts (lithium-ion battery)
  • High-quality universal 2-channel charger
  • LED status display
  • This item fits the following models: STT NO, STT NK, STT NV

STT-shaft twist tester NK

Twist test with digital camera

STT-shaft twist tester NV

Twist test with video camera

Technical information & specifications:

• Measuring range: DP 20 - 500 μm
• Twist depth Dt> 200nm *
• Axial back focus: 15mm
• Shaft diameter: 5 - 200mm (STT R150 N 300mm)
• Illumination source: class 2 laser diode module
• Power supply: 6 volt battery
• Weight: approx. 600g
• Digital camera (optional)
* Depending on roughness and twist period, permissible roughness Ra = 0.1 - 0.5 µm


pdf icon Downloads:

Product Information:

Flyer English

Flyer German

Data sheets and additional information:


Telephone contact

We are happy to assist you by phone!

E-mail contact

Simply contact us via email!

Address & Location

Matesy GmbH contact and travel information

We use cookies

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.