Hi Christoph, I'm not sure if this answers your question but this section of the Tutorial shows how to change the units and snap settings in the PCB, PCB footprints (libs) and PCB Modules canvases: https://easyeda.com/Doc/Tutorial/PCB.htm#Canvas This section of the Tutorial shows how to add measurements to PCB and PCB footprints (libs): https://easyeda.com/Doc/Tutorial/PCB.htm#Measure You cannot set units in schematics and schematic symbols because units have no meaning in these canvases.

Thanks for your reply Andy. I was referring to the schematics. I would nearly be agree with you except when you print such a schematic and one use iso symbols, it would be nice it matches the standards.

In schematic, the unit is scale 10mil, if the grid is 10*10 mean **about** 100mil*100mil .

Hi I would like to increase the schematic area for a wider board Is there somebody should tell me how to solve this question .. tks Rajamim Azoubel

Hi Rajamim, I am confused by your question: `I would like to increase the schematic area for a wider board` Do you mean: 1. schematic as in circuit diagram? 2. board as in PCB? 3. board outline? To edit the **schematic** canvas area: ![enter image description here][1] and similarly to edit the **PCB** canvas area: ![enter image description here][2] To define a **board outline**: ![enter image description here][3] [1]: /editor/20160423/571a90e138502.png [2]: /editor/20160423/571a914a58dae.png [3]: /editor/20160423/571a984a9a363.png