Light Fixtures and Text Not Scaling Correctly

Posted on May 20th, 2014. Last updated on June 15th, 2023.

Q: When I insert light fixtures, run the Calculate command, or insert the light fixture schedule on the drawing, the graphics and text are too big or too small for my drawing. How do I make them scale correctly?

A: Design Master uses the standard CAD system variable DIMSCALE to determine the scale of the current drawing. DIMSCALE is used to size text, leader arrowheads, most light fixture blocks, and other drawing elements that are not to scale. Design Master entities are designed to look right collectively as long as DIMSCALE is set correctly.

To make your Design Master entities scale correctly for your drawing, you will need to adjust your DIMSCALE value, then update the Design Master entities on the drawing using the steps outlined below.

NOTE: Do not use the CAD SCALE command to rescale Design Master entities. The changes will not be saved and will likely be undone later.

  1. Enter DIMSCALE at the command line to check the current value.
    NOTE: DIMSCALE should never be set to 1.
  2. Enter the value you think the DIMSCALE should be. Common drawing scales and their respective DIMSCALE values, depending upon the base unit of the drawing, are listed in the table on the right.
    Higher DIMSCALE values will make entities larger; smaller DIMSCALE values will make entities smaller.
  3. Insert a new light fixture on the drawing. The block and callout will come in at the new scale.
    If the new scale looks right, proceed to the “Updating Design Master Entities” section below.
    If the new scale does not look right, repeat these steps until it does.

Updating Design Master Entities

Once your DIMSCALE has been set correctly, to update the size of light fixtures already on the drawing, run the Coordinate Drawings and Database command.

The text size of your illuminance level values and calculation schedules will update the next time you run the Calculate command.

If you have inserted the light fixture schedule on the drawing, its text and blocks will change the next time you update it.

Common DIMSCALE Values
Drawing Scale DIMSCALE
(Foot)
DIMSCALE
(Inch)
1″=500′ 500 6000
1″=200′ 200 2400
1″=100′ 100 1200
1″=60′ 60 720
1″=50′ 50 600
1″=40′ 40 480
1″=30′ 30 360
1″=25′ 25 300
1″=20′ 20 240
1″=10′ 10 120

 
An example of a drawing that is not scaled correctly.

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