Adjustable Hook Rules - Lee Valley Tools

Pocket Wrench - Lee Valley Tools

Lee Valley Wooden Folding Rule - Lee Valley Tools

Rulers - Page 2 - Lee Valley Tools

Known in the trade as 4R rules, each of these has four different scales. One face has 1/8 and 1/16 divisions, the other 1/32 and 1/64 divisions.

Adjustable Hook Rules

Pocket Rule - Lee Valley Tools

Pocket Rule - Lee Valley Tools

Adjustable Hook Rules - Lee Valley Tools

Stop Rules - Lee Valley Tools

Pocket Rule - Lee Valley Tools

Utilitas Hook Rules - Lee Valley Tools

To permit quick registration against the edge of a workpiece, each of these rules has a hardened steel hook at one end. A cam-action mounting bolt secures the hook but releases with a half turn, letting you reverse the hook to use any of the four scales. Hook projects 1/4 for the 6 rule, 5/16 for the 12 and 18 rules, and 3/8 for the 24 rule, letting you reach past relieved corners to register against a flat surface.

Starrett CH604R-12 Spring-Tempered Steel Rule