Or if the sun is shining you could measure the height of the barometer, then set it on end and measure the length of its shadow.

或者，如果天气晴朗，你可以测量气压计的高度，然后把它立于地面，再测量它的影子的长度。

youdao

The length of the string plus the length of the barometer will equal the height of the building.

绳子的长度加上气压计的长度，就等于该摩天大楼的高度。

youdao

Or if the skyscraper has an outside emergency staircase, it would be easier to walk up it and mark off the height of the skyscraper in barometer lengths, then add them up.

或者如果摩天大楼有外置的紧急楼梯，那就更容易了，沿楼梯从下往上走，以气压计长度为单位标注摩天大楼有多少个气压计长度，然后再把这些数值加和起来。

youdao

Not too difficult, place the barometer by the building, measure shadow, measure shadow of building, adjust by the known height of the barometer.

FORBES: How to Become James Bond