DescriptionProvided with four apertures, without red open filter. -40 to 0 to 40 focusing lenses for better resolution. With 2.7 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
