Measuring instrument for bowls game - consists of rod with blades sliding in tube having points at each end

摘要

The measuring instrument for use in the game of bowls consists of a tube (2), with a sharp point (3) at one end, in which a rod (4), with a sharp point (5) on its end, slides. The shortest distance between these points is 50cm. Near one extremity there is a rod (6), which projects laterally at an acute angle alpha, whose free extremity (8) is also 50cm., from the opposite point (3). The free extremity of this is a sharp blade whose edge is perpendicular to the instrument and this is used to inscribe an arc on the ground.