Horizontal Inclining Sundial by T. Mason Dublin, c.1836-1880

Encased, Portable Horizontal Inclining Sundial, in original embossed, hand-stitched leather case. Signed 'T. Mason Dublin'. Irish made, circa 1836-1880. Thomas Mason, an Irish optician & scientific instrument maker, who apprenticed under his father (Seacombe Mason), until later handing the business down to his son. 

Adjustable horizontal dial, base angle for gnomon is 60 degrees. Compass card has 8 cardinal directions, jeweled pivot, needle lock, dial graduated every 1 degree, quadrants every 10 degrees.