Dimension Editor

The Dimension Editor holds everything Lens extracted about one dimension. Click a dimension’s box on the drawing to open it. Changes save as you make them.

Tip: Lens fills these fields from the drawing. Usually you only check them and tick Verified.

Balloon Number and Verification

Engineering drawing being auto-ballooned
  1. Balloon number: click it to change the number. See Locking Balloon Numbers.
  2. Lock: keeps the number fixed when balloons are renumbered.
  3. Close (×): closes the editor.
  4. Verified: tick once you’ve checked the dimension. The Dimensions List counts verified dimensions.
  5. Delete dimension: removes the dimension and its balloon.

Value and Tolerances

Engineering drawing being auto-ballooned
  1. Dimension type: pick the type from the list, for example Linear, Diameter or Radius. Click + to add your own name for a type; it is saved as an alias you can reuse.
  2. Base value: the nominal value.
  3. Upper tolerance and Lower tolerance: click the + or − sign to flip it.
  4. BASIC: marks a basic or reference dimension. See Basic & Reference Dimensions.
  5. Class: a tolerance class, for example g6.
  6. Count: for repeated features such as 4× or 12×. The inspection plan numbers each one as a sub-row.

Instrument Tab

Engineering drawing being auto-ballooned
  1. Instrument type: the kind of instrument used to measure this dimension, for example a vernier caliper.

Once you choose a type, This instrument is picks the specific instrument from your gauge list, which identifies it by its measurement ID.

Groups Tab

Pick the dimension groups this dimension belongs to. A dimension can be in more than one group.

More Tab

Engineering drawing being auto-ballooned
  1. Ch. Class: the character class: None, Minor, Major or Critical. The balloon’s colour and shape change to match.
  2. Notes: free text for whoever measures the part. Notes appear in the exported inspection plan.

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