How To Use A Scale Ruler On Drawings
What is a Scale Ruler?
A scale ruler is the three-sided ruler used past architects and readers of blueprints to convert between scaled drawings and the actual dimensions without having to resort to any mathematical calculations. An builder uses the scale ruler to catechumen dimensions into a smaller cartoon of a building programme. The reader of the bluish print volition then use a scale ruler to translate the drawing into the real sizes for construction.
Choosing the Correct Calibration
On each side of a scale ruler at the far left before the goose egg marker is a number reflecting the calibration of the rules on that particular side. Using the appropriate calibration is crucial and should exist the first step. If reading a blueprint, the appropriate scale will be written on the plans. If drafting a plan, choosing an appropriate scale volition depend on the size of the drawing compared to the actual dimensions described.
Measuring with a Calibration Ruler
Mutual scales are 1/ii, 1/four and 1/16. These reverberate the fractions of an inch that correspond to anxiety in the full-scale dimensions. To read a blueprint with a scale ruler once the appropriate calibration is determined, line upwardly the goose egg marker with the beginning of the length to be measured. If the altitude falls exactly on a line of the ruler, that is the measure in feet. Brand sure the correct marks are being read, equally virtually scale rulers have ii scales per side for maximum efficiency. If the altitude being measured does not autumn exactly on a line, the exact measure will exist the number of feet corresponding to the nearest line passed plus a certain number of inches. Determining the inches volition require a second measurement. Before removing the scale ruler, first mark the appropriate foot line on the cartoon. The commencement inch of the scale ruler is subdivided into twelfths, respective to inches. Line upwardly the null line with the mark representing the pes line of the first measurement, and employ the detailed marking to discover the number of inches. The full measurement will be the number of feet plus this number of inches. Even with this second step, using a scale ruler is much easier and faster than making complex conversions using math. It also minimizes the chance of error in the calculations. With a footling practice, using a scale ruler becomes a simple but essential tool for the contractor and architect akin.
Source: https://sciencing.com/scale-ruler-work-4568637.html
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