reglet

1. (printing) A strip of wood or metal of the height of a quadrat, used for regulating the space between pages in a chase, and also for spacing out title pages and other open matter.Examples: "The footsticks may be a trifle shorter than the width of two pages and the gutter; for as there should always be a line of quadrats, or a reglet cut to measure, at the foot of each page, the footstick may be a pica shorter without danger, on this account, of any thing falling out, when the form is lifted and it thus prevents the side and foot sticks from binding when locked up."

2. (architecture) A flat, narrow moulding, used chiefly to separate the parts or members of compartments or panels from one another, or doubled, turned, and interlaced so as to form knots, frets, or other ornaments.Examples: "the cone of light pans over […] the two rag throw-rugs' ovals on the hardwood floor, black lines of baseboards' reglets […]"