Guide TiltRay. 28 cm diameter, 15cm deep. Nice glass, nice body, good threads. Reflectors OK for daytime, could do with re-silver for real night driving. Few fatigue cracks in the stainless outer trim. I have more photos. Postage in Europe is 30 euro. WorldWide postage is 55 euro.
Here is an early, smaller sized, Zenith all brass updraft carburetor, It is marked "03 1/2" and has a 1908 Patent. The throttle bore is 1 1/16" and the mounting holes are about 1 3/8" apart center to center. This is a nice, clean original carburetor that shows hardly any wear and does not look like it has ever been apart or messed with.