Tamper 9 Posted August 23, 2012 (I really probably shouldn't, but I cannot help myself): I don't want to know what a "Fahrtmesser" is used to measure... Share this post Link to post Share on other sites
Bullethead 12 Posted August 23, 2012 (edited) (I really probably shouldn't, but I cannot help myself): I don't want to know what a "Fahrtmesser" is used to measure... Greenhouse gases Edited August 23, 2012 by Bullethead Share this post Link to post Share on other sites
Olham 164 Posted August 23, 2012 A "Fahrtmesser" on an aeroplane should be an "airspeed indicator". A "Tachometer" shows you the speed of your vehicle, independent from the RPM. You could drive 50 km/h at very different RPMs, right? While the RPM indicator does exactly that - tells you the rounds per minute. If you do not see the difference between these two, then you are hopeless cases. Share this post Link to post Share on other sites
HumanDrone 4 Posted August 23, 2012 I absolutely object, Herr Olham! We can see the difference and still be hopeless cases! Share this post Link to post Share on other sites
Olham 164 Posted August 23, 2012 Well, that confirms my worst secret fears... Share this post Link to post Share on other sites
HumanDrone 4 Posted August 24, 2012 (edited) You know, these are some beautiful old instruments. And it's amazing what they did with them. I recall working for several days on a fancy computer analysis (when I was new at this), only to have my boss review my work and utterly demolish it in two minutes - with a plastic 6" slide rule! I just got a Droid Razr Maxx as my new company phone the other day. Of course, I immediately downloaded a slide rule for it! Thanks for the purr-ty pictures! Edited August 24, 2012 by HumanDrone Share this post Link to post Share on other sites
von Baur 54 Posted August 26, 2012 PS: there are other pages with more instruments in that site - really good quality pictures; like this "Barograph". Target Ware's "Richtofen's Skies" had this modelled (working) in one of their German two-seaters. Share this post Link to post Share on other sites
Dimus 0 Posted August 29, 2012 Another crude vintage airspeed indicator. The amazing fact is that it comes from a more modern interwar DH Gipsy Moth. You would expect a proper Pitot driven gauge by that time but perhaps it was charged extra, this being a civil plane. Share this post Link to post Share on other sites
Hasse Wind 46 Posted August 29, 2012 A simple and cheap device like that one must have been perfectly adequate for the Moth. Share this post Link to post Share on other sites
Bullethead 12 Posted August 30, 2012 Yes, the Gypsey Moth's version was a simplified version of the Austrian Teddybär type ;) Share this post Link to post Share on other sites
