File talk:Thyratronsmall.jpg

Scale of the picture ?

Would be nice, if possible, to include a ruler, or some common object, in the photograph, to give an idea of the size and scale. If that's not possible, could somebody find out the size of the tubes in the picture, and attach a computer graphic of the scale to the right-hand side of the picture? Using a small tube as a guide to the size of a large tube isn't as useful as you might think! 188.29.165.219 (talk) 21:36, 27 October 2015 (UTC)