noun
shear box
Technical term in soil mechanics and geotechnical engineering; a device used to measure the shear strength of soil samples.
せん断箱を用いて土のせん断強度を測定する。
The shear strength of the soil is measured using a shear box.
Compound of せん断 (shear) and 箱 (box). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.