Consists of the following
items:
Nodal Upright: Consists of
a combination of single & double lens holder on a mount rotating along the
vertical axis.
The combination lens
holder are adjustable in height and the single and twin lens holder can be
moved together by rack & pinion or relative tp each other by rack &
pinion or relative to each other by sliding. These motions can be read by
individual pointers on mm scale.
Mirror: Plain inclinable
with 3” steel C.P. Stem.
Optical Slit: With fine
machined cross slit one surface & white & the other optical black with
3” steel C.P. Stem
Lamp House: an electric
bulb is encased in a metal case with cord & pin. It works on 220V AC.
