Setting Units Options

Select Standard, Small, or Large from the drop-down list.

Select Metric or Imperial from the menu.

Select the default units used for length.

• Metric
  • Millimeters (default)
  • Centimeters
  • Meters
  • Micrometers
  • Nanometers
  • Kilometers
• Imperial
  • Inches
  • Feet
  • Feet & Inches
  • Mils
  • Miles

  See the Small/Large units section for notes about working with Micrometers, Nanometers, Mils, Kilometers, and Miles units.

If you use Imperial units, you can select Decimal or Fraction to display distance measurements that are less than 1 unit.

Select from the following options. For SCDM only, a check box to Use project units when available will be active only when you are modifying settings for all new documents. The option will be disabled by default.

• Degrees
• Degrees/Minutes/Seconds
• Degrees/Minutes
• Radians

Select the default units used for mass.

Select Independent to specify the density units from the density fields or Derived to calculate the units from your selections for length and mass.

Select the abbreviation you want displayed for unit type you selected for Length.

The number of decimal places you want displayed for distance measurements for the primary units.

The number of decimal places you want displayed for angle measurements for the primary units.

Select this option to display trailing zeros in decimal measurements.

When this option is selected, tolerances are rounded to a value that gives a tighter tolerance when you have dual dimensions or when a dimension from the design window is shown in the drawing window with a different unit setting than the design window. The purpose is to not lose any precision when converting from one unit system to another. When this option is not selected, the values are rounded according to method A in ISO 370-1975 (E). When selected, values are rounded according to method B.

Select this option to display the units abbreviation in DesignSpark Mechanical. The abbreviation will appear in measurement fields, such as a distance field when you pull a face.

Select this option to display the units abbreviation after the measurement in annotation dimensions.

Select this option to display a hyphen between whole values and fractions.

Select this option to display annotation dimensions in both Metric and Imperial. The unit type you have selected is displayed first and the other is displayed in square brackets. You can see a preview of the display below this option category.

The number of decimal places you want displayed for distance measurements for the secondary units.

Check this option to show the nearest fractional value Less Than the nominal dimension and the nearest fractional value Greater Than the nominal dimension. It allows for Ruler-style dimensions. For example, if you were to lay a ruler down and the distance falls between the marks on the ruler, these values tell you the nearest marks on either side of the dimension value.

• Fraction: Enter a fraction between 1/128 and 1/2. The default is 1/16, which is a common ruler increment.
• From both sides: Show fractions on both sides of the nominal dimension.
• From closest: Only show the fraction that is closest to the nominal dimension regardless of which side it is on.