# What Is The Diamond For On A Tape Measure?

## What is the 21 ft rule?

The “21-Foot Rule” was a measure of distance that related to the time it would take an officer to recognize a threat, draw a sidearm, and fire two rounds center mass against an attacker charging with a knife or other stabbing weapon..

## How can you measure a room without a tape measure?

The Easiest Ways To Measure A Room Without A Tape MeasureYour foot. Probably the most intuitive way to measure without a tape measure is using your feet to measure a room. … Your height. If you’re stuck in a bind without a tape measure, another great way to measure a room is as simple as lying down on the floor. … The width of your arms. … A binder. … A laser measurement tool.

## How many 16ths are in an inch?

A ruler marked in 16ths. Every mark is 1/16th of an inch….How many 1 16ths are in an inch?FractionDecimalMillimeters5⁄16”0.31257.93753⁄8”0.3759.5252 more rows•May 21, 2020

## What are the best tape measures?

The 8 Best Tape Measures of 2020Best Overall: Milwaukee Premium Magnetic Tape Measure at Home Depot. … Best Budget: Stanley 25-Foot by 1-Inch Measuring Tape at Amazon. … Best Extra-Long: DeWalt 300-Foot Measuring Tape at Home Depot. … Best Digital: … Best for Construction: … Best for Plumbing: … Best for Sewing: … Best for Fractions:

## How does tape measure age trick work?

Now bend the tape measure over and bring back the end of it until it lines up with your birth year. Now find the last two digits of the current year, and see what corresponds to it on the other side of the loop you’ve created. Take the last two digits of that number and subtract it from 100 and you’ll have your age.

## Why is 16 red on a tape measure?

As you extend the tape measure, you’ll probably see the numbers 16, 32, 48, 64, 80, 96 and so forth in red. The red indicates 16-inch-on-center spacing. This is a common framing spacing for wall studs, floor joists and common roof rafters. … The hook end of your tape measure is supposed to wiggle a little bit.

## How much is 3 16th of an inch?

Conversion table inches to mmDimensions — Inches to Metric0.125”1/8”3.18 mm0.188”3/16”4.78 mm0.250”1/4”6.35 mm0.313”5/16”7.95 mm21 more rows

## What are the red numbers on a tape measure?

THE RED NUMBERS Many tape measures add red numbers (or some other graphical standout) every 16-inches, a very common spacing for studs in house framing. This spacing allows for six supports in each 8-foot length.

## How do you use a black diamond on a tape measure?

Starting at the 19.2-inch mark, the black diamond helps you find the center of the first stud. The next black diamond is 19.2 inches away from the first stud (38.4 inches from the beginning of the tape measure), and the diamonds go all the way to the 96-inch mark, or 8 feet.

## What is the 8 foot rule?

It’s called the 8-foot rule. A leader at a manufacturing facility recently gave the direction to his leadership team to engage with their employees every time they come within eight feet of one of their employees. It’s a simple rule that is simply brilliant!

## What is the tape measure trick?

Here is how the trick works. Pull out the tape measure and fold in half so that the metal end of the tape measure is lined up to the current year. Your tape measure should be doubled back on itself. Since it is 2011, you need to line up the end of the tape with 111. Next, find the year you were born.

## What is the 5 foot rule?

The 10 and 5 rule is a simple guideline that is widely used in the hospitality industry. The rule dictates that when a staff member is 10 feet from a guest, the staff smiles and makes direct eye contact, and when they are within five feet, the staff verbally greets the guest.

## What is the black dot on a tape measure for?

The black diamonds which appear every 19 3/16” on metal tape measures are for spacing I-beam “timbers”. Several wood-product manufacturers offer I-beam “timbers” as a substitute for solid lumber floor joists. The diamond marks on our tape rule blades are for spacing these engineered floor joists in new construction.

## Why are tape measures yellow?

Tape measures often have black and red measurements on a yellow background as this is the optimal color combination for readability.

## What is M on a measuring tape?

On many tapes (but by no means all) you will find a small red rectangle with the letter M printed inside followed by a number. The number simply denotes the year that the blade was stamped as conforming to the Measuring Instruments Directive. On the whole this will also be the year in which that tape was manufactured.

## What is 16 on a tape measure?

These numbers refer to the 16″ centers for laying out studs and joists. Most carpenters have the 16″ centers memorized up to 8′, but a little help on the tape measure is well received when you get to 128″. As well as the 16″ marks, notice a black diamond mark every 19.2 inches, also called the black truss mark.

## Can you measure your shoe size with a tape measure?

Measure the width of your foot by using your measuring tape or ruler to measure from the line on one side of your tracing, to the line on the other side. Again, be certain to find the closest mark that you can (for inches, use the closest 16th mark).

## Why is a tape measure curved?

Have you ever wondered why the blade on a tape measure is curved? The concave design helps keep the blade rigid when extended. This curve allows the blade to “stand out” while measuring, helping you read the measurement.