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the marking are what we call the 19-2 layout (19 and 2/10ths inches). used more with floor trusses. the floor trusses are strong enough to be spaced just over 19 inches apart and a sheet of floor decking still works being half on the truss at eight feet. floor trusses are made of 2x4's and steel plates.

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Q: What are the black diamond markings on a tape measure?
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What does the diamond symbol at 19.1875 on a tape measure stand for?

These are known as 'black truss' markings, and are used to mark out equal truss lengths for roofing materials (five trusses per standard 8 feet (2.4 m) length of building material).


What is the definition of tape measure?

A tape measure or measuring tape is a flexible form of ruler. It consists of a ribbon of cloth, plastic, or metal with linear-measure markings, often in both imperial and metric units. Surveyors use tape measures in lengths on the order of hectometres.


How do you measure in mm cm and m?

To measure in millimeters (mm), use a ruler or measuring tape with markings in millimeters. To measure in centimeters (cm), use a ruler or measuring tape with centimeter markings. For meters (m), use a meter stick or measuring tape with markings in meters. Simply align the start point of the object you are measuring with the zero mark on the ruler or tape and read the measurement at the endpoint.


What tool is used to measured length?

Some of the standard instruments used to measure length are a ruler, meter scale, measuring tape, vernier caliper, and screw gauge. To measure very long lengths like the length of a road we use measuring tape


Use an example to explain how the available tools can affect the precision of a measurement?

Let's take the example of measuring the length of an object using two different tools: a ruler and a tape measure. The ruler has markings in millimeters, while the tape measure has markings in centimeters. If we use the ruler, we can read the measurement more precisely as we can estimate the length between the markings in millimeters. However, with the tape measure, we can only estimate the length between the centimeter markings, which is less precise. Therefore, the available tools have a direct impact on the precision of the measurement.


What does the diamond mean on a tape measure?

The diamond symbol on a tape measure typically indicates the center point of a measurement, helping to easily locate the halfway point when measuring materials. This can be particularly helpful when you need to divide a length in half for accurate cuts or installations.


What can you measure with a tape measure?

Lengths - in units that are marked on the tape measure.


How do you measure head correctly for a riding hat?

A hat size is measured by using a tape measure. Put the tape measure at the top of the forehead by the hairline. Wrap the tape measure around the head.


What is 0.575 on a tape measure?

The answer depends on the units used for the tape measure.


What instrument measures the length of a desk?

A tape measure or ruler is commonly used to measure the length of a desk.


What would you use to measure around a basketball?

I would use a fabric tape measure.I would use a fabric tape measure.


What science tool would you use to measure the length of an object?

You could use a ruler or a measuring tape to measure the length of an object. Both tools have markings that allow you to accurately determine the distance from one point to another.