The Body Tube has a Field lens (dia=2.5cm, f=110cm) at its base. The Huygenian eyepiece is inserted at the end. It consists of two plano-convex lenses: lower lens dia=2.1cm, f=4.6cm; top lens dia=1.2cm, f=3.2cm.
Height of the eyepiece is 5.3cm.
Typical French-style objective with three ganged lenses. They are marked with •, ••, and •••.