측심

Sounding

측심기

Sounding Machine, Fathom-meter

측심대

Leadman`s Platform

측심봉

Sounding Rod

측심연

Sounding Lead

측심줄

Lead Line

측심추

Hand Lead

층

Layer

치수계수

Scantling Number Scantling Numeral

치수조정관

Adjustable Pipe, Loose Pipe