## What sizes do steel rulers come in?

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The most commonly used steel rule is the 6″ rule. Although rules come in 6-inch increments (Example: 6″, 12″, 18″, 24″, and 36″ lengths), the 6-inch rule is the most popular because it fits into the apron pocket easily.

## What is metric steel rule?

Flexible stainless steel rulers A steel ruler or rule is a type of straightedge measuring tool that measures actual sizes in either imperial or metric measurements and for drawing straight lines.

**What is a 16R ruler?**

The sides of each rule are ground parallel and each end is accurately ground square to allow reading from either end. 16R graduations have 1/50” and 1/100” on one side and quick-reading 1/32” and 1/64” on the other. Graduations are precision photo etched and then white filled for easy readability.

**How do you read a metric steel ruler?**

On a metric ruler, the numbers represent centimeters. The individual lines between the numbers represent millimeters. Each millimeter is one-tenth of a centimeter, so ten millimeters equals one centimeter. Before you start measuring, make sure that one end of the object is lined up with the 0 cm mark on the ruler.

### Where is the mm in ruler?

Look at the unmarked lines on a metric ruler. There are 2 separate units of measurements on a standard metric ruler—centimeters and millimeters. The numbered lines correspond to centimeters, while the unmarked lines indicate millimeters. If you look closely, you’ll notice that there are 10 millimeters in a centimeter.

### What are the ruler measurements?

The markings on a standard ruler represent the fractions of an inch. The markings on a ruler from the start to the 1″ mark are: 1⁄16“, 1⁄8“, 3⁄16“, 1⁄4“, 5⁄16“, 3⁄8“, 7⁄16“, 1⁄2“, 9⁄16“, 5⁄8“, 11⁄16“, 3⁄4“, 13⁄16“, 7⁄8“, 15⁄16“, and 1”.

**What are 600 and 1000mm rules commonly used for?**

Steel Rules are commonly available in a range of sizes including 150mm, 300mm, 600mm and 1000mm. They are also used as Straight Edges when marking lines or testing for straightness.

**What is a 4R ruler?**

More Photos. Take precise measurements with the PEC® 6-inch rigid stainless steel 4R machinist engineering ruler. A 4R graduation indicates 8ths and 16ths on one side and 32nds and 64ths on the opposite side for versatile measuring, and the long edges are flat and straight for accuracy.

#### What is a 5R ruler?

5R—1/100″, 1/64″, 1/32″, 1/10″ 6R—1/32″, 1/64″, 1/10″, 1/100″ 7R—1/100″,1/64″, 1/32″, 1/16″ 9R—1/16″, 1/32″, 1/64″ 10R—1/32″, 1/64″ (quick-reading)

#### Is a metric ruler the same as a regular ruler?

In science class, most measurements are much smaller than a meter. A metric ruler is the standard instrument for measurement in the scientific laboratory. On a metric ruler, each individual line represents a millimeter (mm). The numbers on the ruler represent centimeters (cm).

**What units are on a metric ruler?**

A metric ruler or meter stick are the instruments (tools) used in measuring length. The units of length most commonly used include the meter (m), centimeter (cm), millimeter (mm), and kilometer (km).