BRUSSO - The L-97 offset pivot cabinet hinge is employed when a minimum of visible hardware is desired or when the door must swing free of its frame. It is mortised into the top and bottom of the door and frame; only the pivot is visible. The leaf measures 3-1/4" x 3/4".
Hint
To convert Decimal Inches to Millimetres, Multiply by 25.4
e.g. 0.5 decimal inches = 12.70mm