Traveler's Company Brass CM Ruler
Fifteen centimetres of solid brass, engraved rather than printed, made in Japan. It starts bright and goes dull and mottled with handling, which is the point. Weighted enough to hold a page down on its own.
$22

Traveler's Company Brass CM Ruler in brass.
Buy at the retailer
The shop · FDV Concierge, curated by Sharon Lombardo