Table of Contents
What are folding rules?
Folding rules, sometimes called zig-zag rules or jointed rules, are a series of two or more smaller rule strips joined with hinges. These rules can be folded together to be carried easily, or used in confined spaces. Once the strips are opened out they can usually be fixed into place, which creates a long rigid rule.
What is two foot four folding rule?
A one-foot, two-fold rule had a joint in the middle and folded to a length of 6 inches. A two-foot, four-fold rule was also 6 inches long when folded. A one-foot, four-fold rule was easy to carry in a shirt pocket, since it was only 3 inches long. A boxwood rule could be hand graduated in about 10 minutes.
How do you read a mason ruler?
The brick mason’s ruler has sets of numbers 1 through 0 combined with a red number next to the black 1 through 0 numbers. Multiply the courses number, or the small red number, by the original measurement in inches to obtain the measurement in inches from the original measurement and the courses measurement required.
What do you call a folded measuring tool?
Most people call these “Carpenters Rulers” , or a “Folding Carpenter Ruler” , either way they fold and work great in most applications where a sturdy tape measure is called for.
Which tool is a folded measuring tool?
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What is a caliper rule?
: a rulelike scale with one fixed and one adjustable jaw.
What is zigzag rule?
noun. a rule composed of light strips of wood joined by rivets so as to be foldable, all the opening and closing parts being in parallel planes.
What do weep holes do?
The inclusion of weep holes in masonry walls is intended to serve two purposes: Ventilation: They allow ventilating air to the back of a wall to help prevent mildew, dry rot and damp which might otherwise reduce the life or performance of building materials such as cavity wall-ties, cavity insulation and so on.
How do you measure with a tape measure?
To use a tape measure, pull the tang out from the housing and hook it on the edge of the object to be measured. Stretch the blade across the object, press the lock, and then observe where the blade meets the end of the object. The nearest line on the blade to the end of the object is the final measurement.
How do you use a closed folding ruler?
Folding Ruler Use a Folding Ruler Hold a closed folding ruler in one hand. Grasp the first segment on the top of the ruler and pivot it 180 degrees.
Where are folding rules made in the world?
All parts of the folding rules are made locally and most of the machines used in the process have been constructed and built by our experienced hands. Our classic folding rules with the red ends are made in the folding rule factory in Hultafors, Sweden.
Who was the inventor of the folding rule?
The folding rule led to the invention of the modern tape measure. According to tool expert Bill Brockway, Anton Ullrich invented the folding rule in 1851. The invention of the folding rule “revolutionized jobsites, making it much more convenient to take construction measurements,” says Brockway.
Do you know how to read metric ruler?
While it may seem to be a very basic skill, being able to read a ruler is the foundation to just about any project you make by hand or even with a Shopbot! Reading a metric ruler is pretty simple- no fractions, everything converts nicely in factors of 10, and its pretty straight forward.