Calipers

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/calipers

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the key feature?Adjustable jaws for precise measurement of external, internal, depth, and step dimensions
2. What is the related topics?Metrology, engineering, manufacturing, quality control, micrometer, ruler, gauge
3. What are calipers and why are they called super measuring tools?Calipers are special rulers with two jaws that open and close to touch an object, letting you measure very small parts like a paperclip’s thickness. They’re called super measuring tools because they can read measurements with great accuracy, even fractions of a millimeter.
4. How did calipers become more accurate over time?In the 17th century, Pierre Vernier added a second scale that lets you read tiny fractions of a millimeter. Later, dial calipers used a geared dial, and digital calipers use electronic sensors and screens for even easier, precise readings.

Metrology: The scientific study of measurement and its application in science and industry.
Tolerance: The permissible range of variation in a dimension of a manufactured part.
Resolution: The smallest change in a measured quantity that a measuring instrument can detect or display.