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.
The normal pulse rate is 60 to 100 beats a minute. The rhythm, or pulsation and pause pattern, should be regular. Quality of the pulse is rated on a scale of 0 to 4, 0 being an absent pulse and 4 being a bounding pulse. The pulse is taken by pressing a peripheral artery and counting the beats for thirty seconds then multiplying the number by two. If the pulse is not regular, it should be counted for a solid minute.