http://radact.mysite.com/sale_page.html



It's a signal generator, with crystal markers for calibration, to be
used
for alignment of television RF and IF stages.


Thanks much Brenda. Your answer was very professional. Just like a tech
would answer.

Where should she send the bill?

I would qualify the above with the word "vintage" in your sales brochure.
http://cgi.ebay.ca/VINTAGE-RCA-TELEV... QcmdZViewItem

RF and IF alignments and mechanical tuners were rendered obsolete by
monolithic filters and synthesized tuning. Convergence alignments are the
last true skill of the purist, but largely neglected by manufacturers as few
consumers are purists.