Dating gillette tech razors
The Gillette R&D center in Boston, Massachusetts as, and the Gillette South Boston Manufacturing Center (known as "Gillette World Shaving Headquarters"), still exist as functional working locations under the Procter & Gamble-owned Gillette brand name.Gillette's subsidiaries Braun and Oral-B, among others, have also been retained by P&G.For example, If you have a Standard Fatboy razor and shave with it at a "7" and want to know how another Gillette Adjustable will behave, simply look at the column for the other razor and match up the gap numbers. That is roughly equivalent to a Standard Toggle at a "5" (".032"). Also note Gillette has designed each and every one of the razors to provide about a ".003" difference from one setting to the next.For example, if you have tried Slim at "9" and it is just not provide a close enough shave, look at the blade gap amount for the Slim at "9". Now, find another adjustable razor type that has a higher gap amout than ".039". That is the difference between a razor at any given setting and the setting above or below it will be about ".003".The following is a graphic from an internal Gillette marketing document in the 1950's showing how the range of settings of the adjustable razor satisfies the shaving desires of 99.7% of all consumers.Also, the average consumer will prefer a setting of "5" and 68% of all consumers will be satisfied with an adjustable between the settings of "4" and "6".
For those who care, the average standard deviation is .0072" so considering the "Average Razor" and an average /- 1 STDev as a significance threshold, only the Bottom Dials are significantly different than the rest of the adjustables.
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