1. 由于 libra 有货币及重量单位之意，由此引申出了“天平座”之意。进而有了称重、衡量、测量之意。
2. ca- (卡) + -liper ( libra => -liber, -libre => -liper (变体) ) => caliper: 卡尺 => calipers.
3. caliper <===> calibre, caliber.
4. caliper => calliper => callipers.

caliber口径。
calipers测径规。
b与p字母通转。

1. He picked up the calipers and gauged carefully.

他拿起卡钳仔细测量.

来自《现代汉英综合大词典》

2. He picked up the calipers and measured carefully.

他拿起双脚规仔细测量.

来自辞典例句

3. Calipers are used to measure the diameter of things.

当走到下一层楼时,她的脚步声不久就消失了.

来自互联网

4. Figure 4 is an example of an expected line with four calipers.

图四是用四个卡钳找直线的例子.

来自互联网

5. The carpenter gauged the dowel with calipers.

那木匠用卡钳估量暗榫.

来自互联网