A traditional L-shaped ruler used in carpentry and woodworking to mark right angles and straight lines. Also referred to as 矩尺 (かねじゃく).
See also: 曲尺
The carpenter used a carpenter's square to check whether the pillar was at a right angle.
upside-down mirrored L-shape (in traditional shop logos)
A specific graphic symbol shaped like ┐, often combined with another character in traditional merchant emblems. Frequently written in katakana as カネ in this context.
On the signboard of this long-established shop, the shop name and the カネ mark are drawn.
In old documents, 矩 can represent a standard of correctness.
Standard kanji form for the tool and the shape. The reading かね is used for all senses.
かね is the native name for a carpenter’s square or right angle; 矩 is a semantic spelling based on the character’s meaning “carpenter’s square; standard.”