https://www.reddit.com/r/typewriters/comments/1rq2mdw/my_lowtech_pageend_gauge_hack_no_pencil_marks/

Typewriter Basics: End of Page Indicators by [[Joe Van Cleave]]

Handful of methods:<br /> - page gauges (Smith-Corona, some Royals) - paper support arm (adjustable) - notch in paper pan (Hermes & some Silver Seikos) - Platen knobs (requires mod math and adjustable ring) (IBM)