Program changing from mm to cm

Im not sure if it is something the latest version is doing or if there is something else at play though it seems everytime i start my program and start drawing it has somehow converted to cm. I always draw in mm and every time i change it back it always seems to convert back to cm. Is this something that the latest version is doing and how can i stop it doing this??

Which exactly version you are using, and add a screenshot to the other post How to delete blue green and red arrows and curve that appear at centre of design.

Im using mac version 5.0 and ill put a screen shot on the other post now

Read my previous post How to delete blue green and red arrows and curve that appear at centre of design. Looks like you overwrote your mm startup template with a cm one. Before saving check the Units in Rhino options.

Change it in your start up window. Click show Templates down in the lower right. Then select your size as default.

I hope this helps … randy

Didn’t realise you could do that; tried it out immediately! Everyday’s a school day…

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Isn’t it just! That’s really helpful guys, thank you.