Normal size opening is mostly based on body size. You are quite small, so 41mm may be your normal size opening. However, betel nuts are known to cause trismus (reduced opening) of the mouth. Use the 3-finger test (above) to determine if you are achieving your maximum opening.
Brown County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 248,007, making it the fourth-most populous county in Wisconsin. The county seat is Green Bay. Brown County is part of the Green Bay, WI Metropolitan Statistical Area.
Ellison Bay is an unincorporated census-designated place in northern Door County, Wisconsin, United States, within the town of Liberty Grove and is located on Highway 42 along the Green Bay. As of the 2010 census, its population is 165. The community was founded in 1872 by John Eliasen, a Danish immigrant.