
- Provided with four apertures, without red open filter.
- -40 to 0 to +40 focusing lenses for better resolution.
- With 2.5 V vacuum lamp.
- Screw fitting for fast and secure attachment to the handle.
- Sturdy adjustment ring to turn the instrument head to the ideal position on the handle.
- Extremely impact resistant casing made of glass-fibre reinforced plastic.
- Simple exchange of the lamp at the base of the instrument head.