OK; I think you are confused as to the difference between Metric and Standard (English or whatever you want to call it). Our inch system was broken up into sixteenths of an inch or even thirty seconds of an inch which results in the 1/16, 1/8, 1/4 etc. You can also break the inch into tenths or hundredths which results in measurements like .10, .50, .75 etc. The measurement of .10 is ten one hundredths of an inch. Now that you are really confused the main thing to get you close to something you understand is that 1/8 of an inch is .125 in hundredths; so the .10 is just a shade less than 1/8 inch. All of the above is English measurement; Metric measurement is another whole bag of stuff I doubt you really care about but it is based on the Meter not inches or yards. One Meter is close to a yard. Hope this helps and does not make things worse. To get you even closer 7/64 comes out to .109375.