US 11,692,820 B2
Digital level
Matthew Leidel, Wind Lake, WI (US); Gareth J. Mueckl, Milwaukee, WI (US); Eric Mackey, Milwaukee, WI (US); Gary Lee McMurray, Pewaukee, WI (US); and Taylor Wayne Crenshaw, Milwaukee, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed on Aug. 10, 2021, as Appl. No. 17/398,699.
Application 17/398,699 is a continuation of application No. 16/269,030, filed on Feb. 6, 2019, granted, now 11,092,435.
Application 16/269,030 is a continuation of application No. PCT/US2019/015110, filed on Jan. 25, 2019.
Claims priority of provisional application 62/663,945, filed on Apr. 27, 2018.
Claims priority of provisional application 62/622,011, filed on Jan. 25, 2018.
Prior Publication US 2021/0364286 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01C 9/06 (2006.01); G01C 9/00 (2006.01)
CPC G01C 9/06 (2013.01) [G01C 9/00 (2013.01); G01C 2009/066 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A level comprising:
a housing comprising a longitudinal axis;
a planar base surface extending parallel to the longitudinal axis;
a first orientation sensor configured to measure an orientation of the housing with respect to the force of gravity, the first orientation sensor defining a first angular position relative to the planar base surface;
a second orientation sensor configured to measure the orientation of the housing with respect to the force of gravity, the second orientation sensor defining a second angular position relative to the planar base surface, wherein the second angular position is oriented at a 90 degree angle with respect to the first angular position;
a controller that calculates an orientation of the housing based on the orientation measured by the first orientation sensor and the orientation measured by the second orientation sensor;
a display that emits an image that corresponds to the calculated orientation of the housing; and
wherein the controller calculates an orientation difference between the calculated orientation and a target orientation, and wherein the image comprises an exaggerated representation of the orientation difference.