On Feb 11, 2:43*pm, "HL Falbaum" wrote:
A used, good condition Replogle Barograph can be bought for under 250 USD.
Two Cameras--200 USD.
snip

That sounds expensive for two second hand 35mm cameras with pretty
basic requirements - a tripod screw thread (for ease of mounting), and
auto wind-on. Is b&w film acceptable? If so a developing drum is
cheap again of Ebay.

However I can't think of a single reason I'd want to do it that way.
If nothing else looking at the trace from a flight recorder can be
very interesting, though I conceed that if you are not bothered about
it being valid for claiming badges, just about any Garmin GPS can be
plugged into a PDA running free software giving a cheap way of
recording flights. My club provides barographs (EW-B) for all club
single-seat gliders which does for Bronze (if not done by direct
observation) and Silver badges.