Olympus BHTU - Page 8

Photo tube
Condenser
height
adjustment knob
Pre- focusi ng lever
Line
cord
-
7
Diopter adjustment
ring
X-axis low drive
control knob
X excursion range:
76 mm.
Y-axis low drive
control knob
Y excursion range:
50mm.
Field iris diaphragm ring
Arrow mark (0 ....... 0 indicates
increase in diaphragm diameter.