Not only do I have quick view of the books of the bible the straight edge helps when I want to underline a passage and I like to use the "ruffle" edge to bracket along the margin passages. I gave one as a gift and she loves it also
Handy to have to review the books of the Bible, as a short ruler, and for use as a straight edge for underlining. The other edge is scalloped. It could also be used as a bookmark but is a little thick for that. The ruler is transparent plastic and seems sturdy.