- Twist period measuring range: DP 20 – 200 μm
- Twist depth: Dt> = 200 nm *
- Axial back focus: 15 mm
- Shaft diameter: 5 – 200 mm (STT R150 N up to 300 mm)
- Illumination source: laser diode module laser class 2
- Power supply: 6 V battery
* Specification for Rz = 2 μm (specification depends on roughness and twist period, permissible roughness. Ra 0.1 – 0.5 μm)
Optional accessories
Some technical useful accessories
Battery charger for STT
Charger + 2x battery (similar to picture)
Voltage (batteries): 3.6 volts (branded lithium-ion batteries)
high quality universal 2-channel charger
LED status display
This article is suitable for the following models: STT NO, STT NK, STT NV