Straight binocular head fitted with precision prism system. Interpupilary distance adjustable 50-75 mm.
Focussing by large knobs on both sides and motion by rack and pinion mechanism.
Fixed x 20 or x40, x30 or x60.
With integral illuminator, 2 lamps are fitted to provide both transmitted and incident illumintation.
Fixed achromatic objectives of x2 or x4.
Wide field eye-piece : x 10 (paired) or x15 (paired).