Arduino Mega 2560 R3 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/arduino-mega-2560/  (CC BY 4.0)
Basis: published board outline
Catalog version: 2026-10-20

Overall (mm): length 101.52, width 53.3
Mounting holes: 4 × Ø3.2 mm, pattern see official outline, screw M3
- Uno-compatible header positions at the USB end; four mounting holes.
- USB-B and barrel jack on the same short edge as the Uno.

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Arduino (official): Mega 2560 documentation, CAD files — STEP, DXF, PDF — see page [verify license at link] — https://docs.arduino.cc/hardware/mega-2560/

Xem Studio scan: not planned; the official CAD above covers it.
API: https://xemstudio.com/api/geometry?object=arduino-mega-2560