Calipers is the American spelling of callipers.

Calipers is the American spelling of callipersCalipers是callipers的美式拼法

The common meaning is a tool with two legs joined at the top, used to measure how wide something is — a pipe, a piece of wood, even a person’s waist in an old doctor’s room. You open the legs, fit them to the object, then read the gap.

The common meaning is a tool with two legs joined at the top最常見的意思是一種上端接在一起、有兩隻腳的工具 used to measure how wide something is用來量東西有多寬 a pipe, a piece of wood, even a person's waist in an old doctor's room像是一根管子、一塊木頭，甚至以前診間裡量一個人的腰圍 You open the legs, fit them to the object你把兩隻腳打開，卡住要量的東西 then read the gap然後讀出中間的間距

There is also a medical sense: metal braces worn on a weak or injured leg to help a person walk. That sense is more British in flavour, but American texts may still spell it calipers.

There is also a medical sense另外還有一個醫療上的意思 metal braces worn on a weak or injured leg to help a person walk指戴在無力或受傷的腿上、幫助走路的金屬支架 That sense is more British in flavour這個意思比較偏英式用法 but American texts may still spell it calipers但美式文章可能還是拼成calipers

In everyday US English the measuring tool is the meaning you will meet first. The word is usually plural in form, like scissors: these calipers.

In everyday US English在日常美式英文裡 the measuring tool is the meaning you will meet first你最先會遇到的意思是量測工具那個 The word is usually plural in form, like scissors這個字的形式通常是複數，就像scissors（剪刀）一樣 these calipers會說these calipers

Though actually the name is a changed, slightly broken form of caliber, the “width” word — the tool took the name of the thing it measures.

Though actually不過其實 the name is a changed, slightly broken form of caliber, the width word這個名字是caliber（也就是『口徑、寬度』那個字）稍微變形而來的 the tool took the name of the thing it measures這個工具借用了它所測量的東西的名字