Textile manufacturers use them to check the durability of fabric, while aircraft makers use them to check aircraft cables. There are plenty of other uses.
For ease, you can purchase a string meter or any other string tension meter that measures it for you. All you need to do is clip it between the strings and it will read the number in the display. If not, you can always use your hand and lightly tap the string bed to get an rough est. The harder it is the higher the tension and vice versa.
I Have a tension to use the bathroom.
Singer
realtor
cool
CHEESE!!!!!
statiticians
I feel a lot of tension in the office today.
Authors use tension so that it creates for excitement and is more interesting for the reader/audience.
The 'meter'.
A Meter stick.
Well there are different ways to use tension. One usage could be 'He touched the rope; he could feel the tension in the tightrope.' Another could be 'He sat silently; he could feel the tension in the atmosphere.'