Hello,
concerning watches there were to my knowledge no issued wrist watches in the flying services. a number of private purchases of them is known (borgel, longines etc.) also a large leather strap that allowed a pocket watch (frequently a ladies watch) to be worn on the wrist was a common private purchase and some of them came with little metal protection cages for the glas. (Albert Balls watch is displayed in the Nottingham Museum)
Austrian air service: Most planes appear to have had instrument panel clocks, generally housed in a chromed case mostly produced by Watzl (a Vienna watchmaker) with enameled dials and luminous numbering. the outer rectangular case is labeled as property of the K&K airforce and numbered. The white dial of the watch itself names the plane production company. i have seen aviatik, albatros flugwerke, phoenix and oesterreichisch ungarische flugwerke budapest, but presume that there are also others
RFC RAF generally used a so called mark 5 with non luminous black dial pocket watch (30 hours or 8 day types are known). these were set in the instrument panel with a screwed on outer case backed by horse hair and were produced by amongst others omega and zenith. they are (RFC types) distinguishable by a large A and an arrow Mark on the back of the actual watch.
French air service. the watches I have seen are all marked as airforce property. generally there were a variety of instrument panel clocks (nice ones in the spad) but i know very little here. CAN anyone help????
German watches are generally of a lower quality than the english equivalents usually instrument panel mounted and marked property of the airforce (Eigentum der Fliegertruppen) on the white dial plus a winged propeller on the back with the letters FL or FLZ (ps i doubt that FLZ has anything to do with zepelins). There are also a few paper dials of late war production arround with a stamp in purple ink labeling them as 'Eigentum der Fliegertruppen'...very rare!
I am just setting up a webpage on
www.oliverwulff.com
(will soon be milwatch.com) and there are already pictures of the above there if you want to have a look.