Gumball scaling issue

Rhino Rhino for Windows
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I encountered following issue with the numeric input for scaling with the gumbaal using units:
when I type in a number into the textbox, the selected object gets scaled up (or down) by this factor. but when I type in a number followed by a unit (e.g. ‘mm’) the seleted object gets scaled to exactly double the size of the input. For clarification: I select a square and click on the little scale-indicator to prompt the textbox. then I enter ‘10mm’. The square gets 1D scaled to a rectangle, but its width is 20 mm. The same thing happens when I enter ‘1in’ oder ‘1"’, in which case the width of the square get scaled to 50.8 mm, equalling 2 inches.
Does anybody know why this happens?
(I am aware of the scale 1D command where I can easily enter the desired dimension in command line, I just stumbled upon this issue while writing a handbook for my colleagues).
Thank you for your time!

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Hi @Tobias_Hugel
If the gumball gizmo sits in the middle of the object (which it does pr. default) what you are scaling is the distance from gizmo center to the tip of the handle - and therefore the 20mm width is correct. Either move the gumball center to the outer left/right or top/center and adjust the tip of the handle to match the width/height of the object - or simply divide the required measurment by 2 (which can be done on the nummerical window by adding “/2” after your number, eg. 50/2mm).
HTH, Jakob

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Adjusting the handle length did the trick. I wasn’t aware of this possibility/necessity, I thought, the width of the object itself is the base of the scaling.

Thank you for your quick and helpful answer, it’s a valuable insight for me!

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Hi again @Tobias_Hugel
Also, check out BoxEdit - there you can scale to dimension directly and easily set the pivot location to minimum, center and maximum. If you do a lot of these transformations it might be easier :slight_smile:
-Jakob

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Yeah, BoxEdit is an awesome command that does nearly all the stuff the gumball can do. but I want my colleagues to embrace the possibilities of the gumball, it’s a mighty tool that’s always there.

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