Abstract: A measurement device comprising a curved container containing a liquid, a first indicator that is less dense than the liquid, and a second indicator that is more dense than the liquid, where the liquid substantially fills the container so that the position of the first indicator and/or second indicator in the container relative to the reference indicia may indicate an angle-related property of the device.
Type:
Grant
Filed:
March 15, 2013
Date of Patent:
June 9, 2015
Assignee:
NO NONSENSE INNOVTIONS LTD.
Inventors:
Roy Masters, Christopher Mark Pedley, Paul Addy, Tim Hazelhurst, David Vis