Improve usability to deselect a Lot or return to the main inventory with all devices

We have already met several people who have asked us how to return to the main menu after selecting a lot. It is really intuitive to have to unselect a lot to see all the devices again. 
They click on the 'Inventory' button in the upper right hand corner but do not see all the devices again.

It is only worth looking at whether it is worth making any changes to this line.