# 2 D Drawings Diameter/Radius function
**URL:** https://discourse.shapr3d.com/t/2-d-drawings-diameter-radius-function/11822
**Category:** Modeling Questions
**Created:** [March 11, 2021, 6:16pm UTC](https://discourse.shapr3d.com/t/2-d-drawings-diameter-radius-function/11822 "2021-03-11T18:16:07Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@SteveW](https://discourse.shapr3d.com/u/SteveW)
#### Post date: [March 11, 2021, 6:16pm UTC](https://discourse.shapr3d.com/t/2-d-drawings-diameter-radius-function/11822/1 "2021-03-11T18:16:07Z")
Great start on Drawing capabilities! Can’t seem to get the Radius or Diameter functions to create label/arrow.
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### Author:  [@KPeter](https://discourse.shapr3d.com/u/KPeter)
#### Post date: [March 12, 2021, 12:13pm UTC](https://discourse.shapr3d.com/t/2-d-drawings-diameter-radius-function/11822/2 "2021-03-12T12:13:15Z")
Hello,
There are two ways of placing radial/diameter dimensions, please give them a try:
- The first is to tap on a circular shape with the pencil then select if the radial or diameter dimension should be shown:
[Video 03-12-2021 13 06](https://share.getcloudapp.com/BluY8j56)
- The second is to select the Radial or Diameter dimension from the Dimensions toolbar in Drawings, then select the circular shape.
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### Author:  [@rammohanp.p](https://discourse.shapr3d.com/u/rammohanp.p)
#### Post date: [March 12, 2021, 12:17pm UTC](https://discourse.shapr3d.com/t/2-d-drawings-diameter-radius-function/11822/3 "2021-03-12T12:17:46Z")
Going further, it is not always possible to dimension a round part on the end view. It may be necessary to dimension it in the elevation or even plan view. I think Shapr3D does not yet allow this. As of now it needs a circle or a radius to do so. Looking forward to this.