1 files changed, 12 insertions, 0 deletions
diff --git a/src/unitConverter/unit/UnitSystem.java b/src/unitConverter/unit/UnitSystem.java
index 2e3a5d8..0a50062 100755
--- a/src/unitConverter/unit/UnitSystem.java
+++ b/src/unitConverter/unit/UnitSystem.java
@@ -16,6 +16,8 @@
  */
 package unitConverter.unit;
 
+import unitConverter.dimension.UnitDimension;
+
 /**
  * A system of units. Each unit should be aware of its system.
  * 
@@ -24,6 +26,16 @@ package unitConverter.unit;
  */
 public interface UnitSystem {
 	/**
+	 * Gets a base unit for this system and the provided dimension.
+	 * 
+	 * @param dimension
+	 *            dimension used by base unit
+	 * @return base unit
+	 * @since 2019-01-25
+	 */
+	BaseUnit getBaseUnit(UnitDimension dimension);
+
+	/**
 	 * @return name of system
 	 * @since 2019-01-25
 	 */