Spring GCA Journal

[Mark in Rochester]

On page 3 can anybody decode the caps column are these just part markings? Same for the parts column CDEF, ADEF, ADFG...

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[Bob Seijas]

I can because it's a fragment of my chart. The parts markings were not the story, but I couldn't easily delete part of the chart. I try to stick to the topic and not tell multiple stories in an article. Here's the key, sorry the spacing did not work:

Cap Style: Parts Marking:
a. Full Groove .......... A. Front Lens Ring 7575050
b. Groove Top Half Only......... B. Sunshade 7640805
c. Knurl ......... C. Tube C7674028
d. Unnumbered.......... D. Turret Housing 7634671
e. Numbered on Top........ E. Knobs 7575180
f. Numbered on Side....... F. Rear Lens Housing 7634670
g. A-prefix Number..... G. Rubber Eyepiece 7575053
h. High Dome...... Z. All of the above
N. None of the above
W. Lens Ring marked W.O.CO
73. Turret Housing marked TELESCOPE-M-73