What to enter for a scale of 1:24000 in Didger 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)

Updated: September 28, 2016

## 0 Comments