A folding ruler is a type of measuring tool that can be folded for easy storage and portability. Also known as a carpenter’s ruler or a zigzag ruler, it is commonly used in woodworking, metalworking, and other industries that require precise measurements. In this article, we will explore the history, uses, and characteristics of the folding ruler.
What is a Folding Ruler?
A folding ruler is a measuring tool that is made up of several hinged sections that can be folded to create a compact and easy-to-store shape. The ruler typically has two sides, with one side featuring a measurement scale in inches or centimeters, while the other side may include additional scales and markings.
When Was the Folding Ruler Invented?
The folding ruler has been in use for centuries, with early examples dating back to the 15th century. However, it was not until the 19th century that the folding ruler as we know it today was developed. This type of ruler became more common as the demand for precise measurements in manufacturing and construction increased.
Who Invented the First Folding Ruler?
The inventor of the first folding ruler is unknown, as similar measuring devices have been used for centuries. However, in 1851, Anton Ullrich, a German carpenter, was awarded a patent for a “folding carpenter’s ruler” that was similar in design to the modern folding ruler.
What is a Folding Ruler Used For?

A folding ruler is commonly used in a variety of industries, including woodworking, metalworking, and construction. It is an essential tool for measuring and marking materials, such as lumber, metal, and drywall. It can also be used to measure distances and angles in a wide range of applications.
Why Use a Folding Ruler?
A folding ruler is an essential tool for anyone who needs to measure distances accurately. The compact design of the ruler makes it easy to store and transport, while the hinged sections allow for precise measurements of uneven surfaces or hard-to-reach areas. It is also durable and long-lasting, making it a reliable tool for professionals and DIY enthusiasts alike.
How Long is a Folding Ruler?
The length of a folding ruler can vary depending on the specific model and manufacturer. However, most folding rulers are between 2 and 6 feet long when fully extended. When folded, the ruler can be as short as 6 to 12 inches, making it easy to carry in a pocket or tool belt.
In conclusion, the folding ruler is a versatile and essential tool for anyone who needs to measure distances accurately. With a long history and a wide range of applications, it is a tool that has stood the test of time and will continue to be used by craftsmen and professionals for generations to come.