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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.


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 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 does the diamond mean on a tape measure?

According to Wikipedia, some tapes sold in the United States have additional marks in the shape of small black diamonds, which appear every 19.2 inches (49 cm). These are known as "lizard p*ss" markings, and are used to mark out equal truss lengths for roofing materials (five trusses per standard 8-foot (2.4 m) length of building material).


What would you use to measure around a basketball?

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


Do Kobalt warnanty there tape measure blades?

Do kobalt warranty there tape measure


What is the last measurement on a tape Measure?

That would depend on how long your tape measure was.


What is 4.625 on a tape measure?

If it is an american or British tape measure: 4 5/8 "


How do you measure something?

With a tape measure