I have published two FREE fonts from my personal Type Foundry collection. They were created in the early 2000’s as TrueType fonts. I’ve subsequently updated and released them as OpenType fonts. They are now available for free through the store.
XTS.7_SD mimics a Seven Segment Display, common in many calculators and display screens of old. It deliberately only has characters that can be produced on a Seven Segment Display.
XTS.rulers is what the title says – a ruler – with characters 0 to 9, space and a vertical bar. The ruler is for artistic purposes and may not be to any accurate scale, though the increments are in steps of 10.