e. Small Illuminating Apparatus.
Small Illuminating Apparatus.
The small illuminating apparatus consists of a somewhat smaller condenser with iris diaphragm and can be adjusted to the Stand IV, when it has the cylinder diaphragm.
$8.—
Cylinder iris diaphragm.
A cylinder iris diaphragm can be furnished in place of the ordinary cylinder diaphragm of Stand II, IIa and IIb at an additional cost of
$6.—