In the 1930 article in "The Connoisseur" by Knowles on stained glass sundials he writes "Sometimes the legs of the fly were painted on one side of the glass and the body on the other, the difference between the two plane surfaces of the glass giving and extraordinary life-like effect of projection, and one, moreover, very easily produced". Hans Behrendt also mentioned this in his later article.
As I had never noticed this detail, I checked the SGSs at Marlborough and Bucklebury and, sure enough, Marlborough has legs outside and wings inside (but I am not quite sure about the body - it was a bit difficult to see!) and Bucklebury very clearly has body and legs outside, wings inside. As one moves from side to side the legs appear to move relative to the wings. These two dials feature on John and Dave's web site http://advanceassociates.com/Sundials/Stained_Glass/sundials.html as dials 19 and 8. Perhaps others who have a "fly" dial not too far away can see how common, or universal, this technique is? Regards Andrew James 51 04 N 01 18 W -
