Question: Characters in the Upper Case (diagram from Updike's Printing Types)

Karen Cheng

Hello!
I was wondering if anyone could help me with the diagram below, which is from Updike's Printing Types.
I didn't recognize the little linear glyphs on the far right.
Does anyone know what they are?

Also, I didn't understand the marks below the 2 Em and 3 Em labels.
Does this refer to dashes?
I didn't know if the wavy characters were for wave-ornaments of some kind?

If anyone has information, I would be very grateful!

Craig Eliason

Rightmost ones look like you could string them together to make horizontal braces {}. 

K Pease

Yeah, those are all for making braces which span any number of lines (and can be turned any which way). You've got a 2-em brace, a 3-em brace, and then the pieces with which to make bigger ones, including the 2-em and 3-em dashes which can go in between to extend them.

Karen Cheng

Thanks for your help, Craig and K Pease! That makes sense.