# Using the Measure Tool

To use the measure tool:

1. Click Measure (Tools toolbar) or Tools > Evaluate > Measure.
While the Measure dialog box is open, you can switch among different documents without closing the dialog box. If you activate a document that has items already selected, the measurement information updates automatically.
2. Optionally set the options to define the unit of measure (Units/Precision ), show XYZ measurements (Show XYZ Measurements ), define the coordinate system (XYZ Relative To ), or project the measurement onto another entity (Projected On ).
Click to expand the dialog box so you can view the selection list and measurement results.
3. Do one of the following:
Option Description
To measure a single entity: Select the entity in the graphics area.

To measure the distance between two arcs or circles: Select two arcs or circles and click Arc/Circle to set the options.
To use the arc/circle options, point-to-point mode must be disabled.
To measure the smallest distance between two entities: Select each entity on the model.

To measure the distance between two points: Click Point-to-Point and select two points on the model.
Callouts appear in the graphics area and new measurements appear in the Measure dialog box.
4. Optionally, click Measurement History to view all measurements made during the current session of SOLIDWORKS.
• To clear an item from the current selections, click the item again in the graphics area.
• To clear all selections, click a blank area in the graphics area.
• To temporarily turn off the measure function, right-click in the graphics area, and choose Select.
• To turn the measure function back on, click inside the Measure dialog box.
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