The ornamental design for a mountingdevice, as shown and described.
1. Mounting device
1.1: perspective
1.2: Side
1.3 Opposite side
1.4: Top
1.5: Bottom
1.6: End
1.7 Opposite end
The design concerns a device (arm) that is mounted to a table for an MR scanner and is intended to be used for supporting/hanging devices like nurse call buttons or headphones.