# Change the scale of the viewport

I'm building a model that's very small, about a square millimeter, that I intend to have 3d printed. I've figured out the model at normal blender dimensions, with the units set to "None", and then I just set my units to "Metric" and scaled the thing down considerably.

Although I could use this model, I might want to make further changes, but since it's so small, it's difficult to work with since the viewport panning is messed up so closely zoomed.

How do I change the scale of my viewport from "meters" to something smaller, like "milimeters"? I've googled around and only find unrelated information.

Here's a screenshot to illustrate my problem.

Notice how in the top left corner of the viewport it says "User Persp" with "Meters" under it. I suspect that's what has to change.

• The viewport controls don't behave any differently at different scales AFAIK, I suspect you are encountering this. Try selecting your object and pressing numpad ., then see if the view navigation feels more natural. – gandalf3 Feb 11 '15 at 23:05
• @NoviceInDisguise not infinitely. you can zoom about to 1/1000 (milimeter size), 1um (micro) is the smallest thing i could see or model/scale. – Bithur Feb 11 '15 at 23:37
• Note that in Orthographic views you will be able to snap to a much smaller grid (depending on your zoom). – VRM Feb 11 '15 at 23:38
• @blaineh don't worry too much about that, scale your object to be able to do what you need. 3D printing sofwares can handle scaling before printing. Or edit your object and scale it when you're done in blender. – Bithur Feb 11 '15 at 23:44
• @blaineh "meters" or "feet" in the top left corner of the viewport is about the unit your using, not the scale. It should say metric or imperial. – Bithur Feb 11 '15 at 23:54