This grid speed counting disk motor speed dial is made of ABS material and mould unlike the acrylic version that can not provide a blocking effect and could be easily penetrated by strong infrared rays, The size is very precise and the key is opaque.
Technical Specifications:
- Code wheel diameter: 25.75mm
- Code plate thickness: 2.58mm
- Number of gratings: 20
- Raster length: 4mm
- Grating width: 1.2mm