Draw metric object in Imperial File?

Is it possible to draw an object using mm in a file that is using Imperial units? I don’t want to change the file units from imperial, but the paper drawing I have for an item that I need to drop into it has all of the dimensions in mm.

I don’t need to dimension it afterwards - I just want to be able to draw it to the correct scale without having to convert the metric dims to feet and inches.

Hi,
I don’t know… it might be best to draw it as if it were in your imperial units (ie draw 10mm from the drawing as 10 units in the file) and then _Scale2D the object once you’ve finished?

Numbers with units can be entered directly on the command line. Just put the unit abbreviation after the number. mm for millimeters, cm for centimeters, m for meters, etc. Rhino will automatically convert the units as needed. Just make sure to put the abbreviation behind each number. For a point at 2.5 millimeters, 10 millimeters use 2.5mm,10mm (not 2.5,10mm). You can also mix units in an entry.

https://docs.mcneel.com/rhino/6/help/en-us/index.htm#documentproperties/units.htm?Highlight=units

Available units:

Use any of the Rhino unit measurements including fractions. You can mix fractional and decimal input.

Microns

1.2mic

1.2micron(s)

Millimeters

1.2mm

1.2millimeter(s)

Centimeters

1.2c

1.2cm

1.2centimeter(s)

Meters

1.2m

1.2meter(s)

Kilometers

1.2km

1.2kilometer(s)

Microinches

1.2microinch(es)

Mils

1.2mil(s)

Feet and Inches

1"

1in

1inch(es)

1’2-1/2(")

1’2.2(")

1-1/2"

1.5"

1’

1ft

1foot

1feet

Miles

1mi

1mile(s)

Other

Angstrom

Nanometer

Decimeter

Dekameter

Hectometer

Megameter

Gigameter

Yard

Printer point

Printer pica

Nautical mile

Astronomical unit

Lightyear

Parsec

4 Likes

one of my favorite features of Rhino by far.

You mean parsecs?

-Pascal

the farthest!

That’s excellent. In 20+ years of using Rhino, this is the first time I’ve had to stray into modelling in imperial units, so it’s New Learning for me. Definitely one for the “Rhino’s little-known features” thread :grinning: