6-lug wheels are measured like 4-lug wheels. Bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs.. Note: When measuring a 5-lug wheel the measurement is only an estimate unless accurately measured using a bolt pattern gauge. A bolt pattern gauge is a specialty tool and is not widely available.
Palpation should be done using the fingertips and intensity of the pulse graded on a scale of 0 to 4 +:0 indicating no palpable pulse; 1 + indicating a faint, but detectable pulse; 2 + suggesting a slightly more diminished pulse than normal; 3 + is a normal pulse; and 4 + indicating a bounding pulse.
To plot the scores along your line you could do something like the following... Declare an array of 100 chars (1 for each possible score), set them all to ' ' (a space) and then in your GradeCheck method set the char at the index of the grade to a '*'. Then when you are done accepting grades use a StringBuilder to create the line of blanks/astericks and print it out.