What is the standard length of a steel rule?

Steel rules can come in either flexible or rigid forms and in a variety of thicknesses and lengths. The most commonly purchased lengths are 150mm (15cm), 300mm (30cm), 600mm (60cm) and 1,000mm.

What is the length of the steel rule in millimeters?

A typical steel ruler features a scale of 30 centimeters, each divided into 10 increments of 1 millimeter each.

How thick is a steel ruler?

Accommodates rulers from 7/8 inch to 1-1/8 inch (22.2 mm to 28.5 mm) wide and up to 0.05 inch (1.2 mm) thick, the typical dimensions of rulers in the 12 inch to 24 inch length range.

What is the minimum accuracy of steel ruler?

In general, a measuring device is considered accurate to the smallest graduation. So a steel rule that is graduated to 1/64″ is accurate to about 0.015″. But with careful visual interpolation, you actually measure to about 0.005″ with a good steel rule.

What is the Black Diamond at 19 3/16 on the tape measure used for?

spacing I-beam
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 tape rule blades are for spacing these engineered floor joists in new construction.

Does the steel rule include a hook?

Steel Hook Rules with Reversible Hook These convenient Hook Rules permit accurate measurements, even when the user cannot see if the rule is aligned with the measuring edge .

What is the use of steel rule?

Steel rules come in rigid and flexible versions. While their primary purpose is accurate measurement, they can also be used as guides for laying out lines, and if rigid enough, for cutting. The thinner, more flexible rules can also be used to measure rounded or cambered work.

What is the least count of scale?

Least count of a measuring instrument is the smallest measurement that can be made accurately with the given measuring instrument. A metre scale normally has graduations at 1 mm (or 0.1 cm) spacing, as the smallest division on its scale.

How many increments are in an inch?

Each inch is divided into 16 lines, meaning that the space between each line is 1/16 inch long—this is the smallest length you can measure with a ruler. (Note that some rulers only go down to 1/8 inch lines, whereas others go down to 1/32 inch lines.)

What are the sizes of stainless steel rulers?

Stainless Steel Rules. Stainless steel rules by Vogel of Germany. Quality stainless steel rulers available in sizes: 150mm, 300mm, 600mm, 1m, 1.5m, 2m steel rule, 3m, 4m, 5m & 6 metre. The range includes engineers rules, metric & metric/imperial rules and right-to-left reading rulers.

How big is a 150mm steel rule?

* 150mm rule has width: 18mm, thickness: 0.5mm, with imperial graduations on the top edge and metric on the bottom edge All prices include 20% discount off RRP! Width: 30mm. Thickness: 1.0mm as standard All prices include 20% discount off RRP! Two sided. Graduated as follows: All prices include 20% discount off RRP! Two sided.

How do you measure the distance of a steel ruler?

Grip the tape measure through the hole in the center and quickly rewind the blade with the specially designed reel. Find the exact center of your work. Measure the total distance with the upper scale; then find the same number on the bottom scale— that’s your center point.

How big is a Starrett steel rule measuring tool?

The Starrett Steel rule is the basic measuring tool from which many other tools have been developed. High Quality Starrett Steel Rules range in size from as small as one-quarter inch in length to many feet long. The Starrett Steel rule is the basic measuring tool from which many other tools have been developed.