So I'm sitting here on a Friday night trying to figure out which shaving brush I'm going to purchase next. The only problem is that I find conflicting reports of what size the C&E BBB is. I like the size of that brush and know I don't want to go smaller or much larger. I have an SR-101 and know it has an 18mm knot. So I measure the outside of the C&E brush but of course that isn't going to tell me anything because the part that's actually measured is in the handle. I sit there scratching my head when she starts paying attention to what I'm doing and puts together a simple algebra equation I completely forgot about to figure out what the knot size is of the C&E. Meanwhile I didn't let on what I thought it was.
SR-101 = 2.25 inches around the base of the knot as far down as I can measure around the hair
C&E BBB = 2.75 inches around the base of the knot as far down as I can measure around the hair
x mm knot
2.25 in = 18mm
2.75 in = x mm
convert inches to mm
57.15 mm = 18mm
69.85 mm = x mm
Cross multiply move the x over divide by 57.15
57.15x/57.15 = 1257.3/57.15
x = 22 mm
9th grade algebra at its greatest. And all this time I thought algebra was a waste of time.
Based upon these findings I believe I'll go with something between 22-24 mm; more than likely an SR 3124 or 22. Is there much of a difference in 2 mm?