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#### Bob1960

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I am always confused with the Tip opening like Vandorens that list 1/100mm for instance the V16
T7 =265
T8 =277
T9 =295
So do these work out to 7 or 7*, 8, *8, 9or 9* ?
Thank you

#### skeller047

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T7 = 7*
T8 = 8
T9 = 8* (or maybe 8**, it's approximately = to 0.116")

The way to calculate this is divide the number given by Vandoren by 2540. That gives the result in inches. (296/2540 == 0.11614...). If you have a value in millimeters (e.g., 2.95), then divide by 25.4.

Hope this helps.

#### Bob1960

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T7 = 7*
T8 = 8
T9 = 8* (or maybe 8**, it's approximately = to 0.116")

The way to calculate this is divide the number given by Vandoren by 254. That gives the result in inches. (296/254 == 0.11614...). If you have a value in millimeters (e.g., 2.95), then divide by 25.4.

Hope this helps.
Thank you for this information Skeller!

#### skeller047

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Missed a 0 in that calc. Decimal points are so exciting.

296/254 == 1.16...

So for the Vandoren numbers in hundredths of a millimeter, the divisor should be 2540. I've corrected my post above. Sorry for any confusion that may have caused. (Though it would be more exciting than a decimal point to try an play a mouthpiece with a 1.16" tip opening...)

#### Bob1960

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Oh that 1.16" tip opening would be fun! Thanks for the correction.

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