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DIMRADIUS

CompleteChecked against Musa CAD 0.8.0Verified

Create a radius dimension for a circle or arc.

Type
DIMRADIUS or DRA
On the ribbon
  • Home › Annotation › Linear › Radius
  • Annotate › Dimensions › Linear › Radius

What it asks first

Command line
Command: DIMRADIUS
Select arc or circle:

Read from Musa CAD 0.8.0 itself (musacad --dump-wiki-data), so these facts always match the release this wiki is built for (0.8.0).

DIMRADIUS dimensions the radius of a circle or an arc: the distance from its centre to its edge. The value is shown with an R in front, such as R15.00.

How it works

Section titled “How it works”

Type DRA and press Enter. Pick the circle or arc anywhere on it. Then move the cursor and click where the text should go. The dimension points from the centre towards the place you click, with its arrow on the curve. The dimension is drawn and the command ends.

Click outside the curve to put the text outside, on a short leader. Click inside to keep the text inside, on the dimension line.

Command line
Command: DRA
Select arc or circle: (pick the circle)
Specify dimension line location or [Mtext/Text/Angle]: (click up and to the right, outside the circle)
Dimension placed.
Dimension created from object.
Two blue radius dimensions. On the left, a circle: pick 1 is on the circle at the lower right, and pick 2 is outside it at the upper right, where the text R15.00 sits on a short landing with an arrow pointing to the circle. On the right, an arc dimensioned the same way reads R20.00.
Pick the curve (1), then click where the text goes (2).
Plotted by Musa CAD 0.8.0 from the example drawing cmd-dimradius.musaDownload the drawing

Options

Section titled “Options”

These options are offered while you place the dimension. After you choose one, Musa CAD asks for the dimension line location again.

OptionWhat it does
Mtext (M) or Text (T)Type your own text at Enter dimension text (<> for the measurement):. <> stands for the measured value, so <> TYP reads R15.00 TYP. Text without <> replaces the value. Press Enter without typing to use the measurement.
Angle (A)Turns the text. At Specify angle of dimension text: type an angle in degrees. 0 or Enter puts it back the normal way.

Good to know

Section titled “Good to know”
  • You can pick a circle, an arc, or a curved segment of a polyline, such as a corner rounded with FILLET.
  • The value comes from the curve itself, not from where you picked it.
  • Musa CAD checks what you picked as you place the dimension. If there was no circle or arc under the pick, it says Could not dimension that object -- select a line, circle, or arc. and draws nothing.
  • With the text outside, a small cross also marks the centre.
  • The R and the number of decimal places come from the current dimension style. A Prefix set in DIMSTYLE takes the place of the R.
  • Esc cancels without drawing anything. U removes the dimension in one step.

Compared with AutoCAD

Section titled “Compared with AutoCAD”

DIMRADIUS uses the same prompts and options AutoCAD users know.

Next

Section titled “Next”
  • Dimension the full width of a circle with DIMDIAMETER.
  • For a very large arc whose centre is far away, use DIMJOGGED.
  • Mark a centre without a dimension with DIMCENTER.