Bible Dry–Liter

This nifty small yellow dry highlighter with a retractable tip "won't soak through delicate Bible pages."

Guess what: it'll also work very nicely outside the scripture space, as legendary producer Bruce Dickinson might say.

Any books with those ultra–thin, almost transparent onion–skin pages will cotton to this device very nicely.

$1.99 here.

Not recommended for priceless manuscripts.