You want to make an isometric drawing of a 1/2 in diameter sphere. What size circle template should you use?

A) 7/16 in B) 1/2 in C) 9/16 in D) 5/8 in

You want to make an isometric drawing of a 1/2 in diameter sphere. What size circle template should you use?
Well, I would use B) 1/2 in.


These questions where the answer sees so obvious tend to make me have second thoughts, but I can't see why it wouldn't be B) for a sphere, of course a circle on one of the orthogonal axises would be drawn as an ellipse.
Reply:A sphere in an isometric drawing is 1.2246 times the diameter. That is because isometric use a scale that is actually larger than life. This requires 5/8 diameter template.
Reply:Assuming the circle template is labelled properly, then the answer would be 1/2". If it wasn't labelled at all, you couldn't use the one that was 1/2" wide or tall because isometric is a distorted 2D view of an object in 3D. There is no true scale for isometrically drawing objects...only the scale used the along its axes (also see axonometric projection).





P.S., although the previous poster is technically correct in what they intend to mean. A proper template should label its features by intended depiction size and not actual drawn size.