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Setting the Scale from Plans
1. Click the Scale button on the left menu
to set the scale.
2. The scale options will appear in the top digitizing window.
3. To calculate the scale from the plans, click the From Image
option (some versions say From Plans). The software will prompt
the user to digitize two points on the plans. Digitize two
points of known distance apart. For example a doorway or a wall
on known length or the scale bar. Then input the distance apart
between the points. The software will then calculate the scale.
4. Calculating the scale from the plans is useful if the plans
have been copied a few times resulting in enlargement or
shrinking.
5. If using Metric units, input the scale from the keyboard how
many cms is 1 cm on the plans. For example 1:100, 1 cm is 100
cm. Also the scale can be calculated from the plans for metric
units as described above. |
