Saturday, November 26, 2022

How to use the Graduated Ruler?

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Some time ago, we wrote about the graduated ruler, indicating that it is a tool or measuring instrument, shaped like a thin rectangular sheet that is divided by a graduated scale represented in units of length, for example inches or centimeters. The graduated ruler is used in areas such as construction, engineering, architecture, geometry, carpentry, among many others.

Given the inquiries that we have received from various readers, we have prepared an article that complements the previous one and, to clarify certain points, we have based ourselves on a popular market model. The indications that we present will serve as a parameter for the use of this tool in general.

General characteristics of measuring with a graduated ruler

This model of graduated rule (we refer to the GR 240), is presented divided into two different scales. On the one hand, the measurement bar has a gray scale showing positive values ​​and a red scale showing negative values. Attached to the measuring rod is the measuring receiver holder and the receiver itself. Towards the bottom of the measuring rod, it has an integrated clamp, which allows the rod to be moved vertically, for measurements. At the base of the measuring bar, there is a folding tab, whose function is to help stabilize the measuring bar on the surface or ground on which it is going to work.

Measurement with Graduated Ruler

Measurement with Graduated Ruler 2-2

Measurement with Graduated Ruler

How to use for height difference measurement

The first step is to place the measuring bar at the first measuring point, and unfold the tab to stabilize the bar to the ground or surface, it should be clarified that this tab helps with the stabilization of the instrument but does not hold it completely, it should never release the measuring bar. After locating and stabilizing the tool at the first point to be measured, proceed to slide the receiver, located on the receiver holder, to the zero position of the measurement bar. This point is the boundary between the gray scale and the red scale of the ruler or measurement bar. With the help of the integrated clamp, move the measuring rod until the receiver receives the laser signal. The indications on the receiver screen will help you adjust the height and obtain the measurement value.

Height difference measurement with graduated ruler

Height difference measurement with graduated ruler

Height difference measurement with graduated ruler

Height difference measurement with graduated ruler

The next step is to place the Measuring instrument in the second point to be measured, following the same instructions for measurement point 1. Adjust the receiver to the height of the laser line but in this step, the adjustment must be done only with the red screw that is located just below the receiver holder . At this point, you can easily view the height difference on the receiver’s display.

Using the graduated ruler to calculate an incline

As in the previous exercise, locate and adjust the measurement bar at the first point to be measured and set the receiver to zero. Move the rod with the help of the integrated clamp so that the receiver receives the laser signal. Position the measuring rod at the second measuring point and proceed as with the difference in heights. You must obtain the distance between the two measurement points, and to obtain the inclination you must apply the following formula: (Height 2 – Height 1 / distance x 100)

Inclination calculation with graduated ruler

Inclination calculation with graduated ruler

Inclination calculation with graduated ruler

Inclination calculation with graduated ruler

Inclination calculation with graduated ruler

Inclination calculation with graduated ruler

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