This is an enclosure designed to house an arduino UNO R3. The lid for the enclosure is thing "Arduino Enclosure Lid, Rev1 (mm)".When this was 3D printed it was necessary to multiply the dimensions x1000 as it was originally CADed up in millimeters and when it was exported to an .stl file the units were changed to meters.imaginen4tion.com This enclosure goes along with the thing titled "Arduino Enclosure Lid, Rev1 (mm)". The Lid thing slides into the Enclosure thing to create a mountable enclosure for an arduino. If the tabs along the sides of the lid are pinched the lid can slide off of the enclosure. Mounting holes positioned for an Arduino UNO R3 have been started inside of the Enclosure thing. Custom holes can be drilled elsewhere for mounting and running wiring.Note: When was 3D printed it was necessary to multiply the dimensions x1000 as it was originally CADed up in millimeters and when it was exported to an .stl file the units were changed to meters.I referenced schematics by johngineer found here: adafruit.com/blog/2011/02/28/arduino-hole-dimensions-drawing/and schematics by Wayne and Layne found here: wayneandlayne.com/blog/2010/12/19/nice-drawings-of-the-arduino-uno-and-mega-2560/in the design of this thing.Whim imaginen4tion.com