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| How do I specify a scale of 1:24000? |
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What to enter for the scale entirely depends on what your map X and Y units are. You will need to calculate the scale, and then enter it for the map:
- Calculate the corresponding value for your map units (see below).
- Select Map in the Object Manager.
- In the Property Manager, go to the Scale tab.
- Enter the calculated X or Y scale value. For example, if you wanted 1:24000 and your map is in feet, you would enter 2000 to the right of Map units per in. for your X or Y scale.
Example Calculations:
If your map is in units of feet, then a scale of 1:24000 is calculated as follows:
1:24000
1 inch = 24000 inches
1 inch = 2000 feet
If your map is in units of meters, then a scale of 1:24000 is calculated as follows:
1:24000
1 inch = 24000 inches
1 inch = 60960 centimeters
1 inch = 609.60 meters
If your map is in units of lat/long, then a scale of 1”24000 is calculated as follows:
1° of latitude is about 68.703 miles or 4353022 inches.
1 inch = 24000 inches
1 inch = 0.0055° latitude (Y Scale)
1 degree of longitude is 69.172 miles * cos(latitude). This is the same as 4382737.92 inches * cos(latitude). So find the latitude of the center of your map and insert it in the equation to find how much 1° of longitude is for your map. So if your central latitude value is 39.5°:
1° longitude is 4382737.92 inches * cos (39.5)
1° longitude is 3381828 inches.
1 inch = 24000 inches
1 inch = 0.007097° longitude (X Scale)
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