Servant's Bell:
Overall height of servant's bell 250 mm (10 inches)
Overall width (scroll)              150mm  (6 inches)
Across bell mouth                  75mm    (3 inches)

Shaker Box: 38mm x 75mm x 80mm 
(1.5 inches x 3 inches x 3.25 inches)

Overall setup:
Minimum overall width 275mm (10 inches)
height 250mm (10 inches)
(When setup with 1 inch gap between shaker and bell)

Allow extra 75mm (3 inches) to width for swing of bell.

The gap between shaker and bell can be up to 6 foot.