### Author Topic: How does one zoom to 100% in Eagle?  (Read 3857 times)

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#### matrixofdynamism

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##### How does one zoom to 100% in Eagle?
« on: July 04, 2015, 02:04:36 pm »
Is there a way to zoom to 100% in Eagle so we can see for ourself how big the board is going to be?

#### alank2

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• Posts: 2003
##### Re: How does one zoom to 100% in Eagle?
« Reply #1 on: July 04, 2015, 08:21:00 pm »
The problem with this is that you don't always have a screen that the software knows the exact dpi of.

You can use the WINDOW command to change the scale, but it doesn't have a 100%.

You can print it with scale so that you can see exactly what the size will be.  I use this option to test footprints I've made to see how they fit the part, etc.

#### alank2

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• Posts: 2003
##### Re: How does one zoom to 100% in Eagle?
« Reply #2 on: July 04, 2015, 08:44:10 pm »
Ok, so you can do this:

window (0 0) (160 160);

And keep decreasing/increasing the numbers (160) until you get the scale right.  I've got my screet set to mm so that is why the 160, this number would be much less in inches.

Keep tweaking it and holding a ruler or the real pcb up to the screen until you get it right...

Good luck,

Alan

#### 3roomlab

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##### Re: How does one zoom to 100% in Eagle?
« Reply #3 on: July 04, 2015, 09:11:18 pm »
you can use the dimension icon to draw a "scale ruler" and from there change units of display (mm/mil/inch).

another way ... draw a long dimension line about 10inch/10cm etc something wide but within your screen width and zoom to it trying to get 1:1 using an actual ruler.
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#### LabSpokane

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##### Re: How does one zoom to 100% in Eagle?
« Reply #4 on: July 05, 2015, 01:45:05 am »
Printing at 100% is a pretty reliable means of getting a dimensional representation of your layout. The dimension feature also works, as well as using the info tool to define the coordinates of the dimension layer.

Smf