It has been brought to my attention by one of my followers that I might serve my readers well by displaying (in situ) some device that will explain how large the object I’m photographing is, for reference.
According to Wikipedia, a gnomon is: Gnomon (γνώμων) is an ancient Greek word meaning “indicator”, “one who discerns,” or “that which reveals.” Sounds like it will fit the bill as something designed to give you an idea of what the scale and size of an object is.
I then took it a step further—
No, wait. No I didn’t. I went backwards and did it my way. Meh, it’s how I roll.
That is, take a piece of 1.5″ oak, rip it to 1″ and plane it true. Then use the marking gauge to slice 1″ blocks on the face. Then use a stain pen (gasp) to color the alternating blocks. Then let it dry. This is what you get: