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The capacity in ml was then determined using the specific weight of the water which is 0,997 g/ml. The difference between tap water and pure water is below the appreciable limits of the measurement in centigrams, and inessential for the measurement whose accuracy is ±0.02 ml (sum of the systematic error of 0.01 g of the scale in the difference between two measurements, even if the error is always higher for a filled pen weight measurement), for the conversion, however, we can substantially assume an equivalence of 1 g => 1 ml being the difference below the measurement error.  

The capacity in ml was then determined using the specific weight of the water which is 0,997 g/ml. The difference between tap water and pure water is below the appreciable limits of the measurement in centigrams, and inessential for the measurement whose accuracy is ±0.02 ml (sum of the systematic error of 0.01 g of the scale in the difference between two measurements, even if the error is always higher for a filled pen weight measurement), for the conversion, however, we can substantially assume an equivalence of 1 g => 1 ml being the difference below the measurement error.  

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{| class="wikitable" style="float:center

{| class="wikitable" style="float:center

|-

|-

| [[Duofold]] ''De Luxe''||[[button filler|button]]|| 22,10 ± 0,01 g || 24,00 ±  0,03 g || 22.35 ± 0,03 g || 1.90 ± 0,04 ml

| [[Duofold]] ''De Luxe''||[[button filler|button]]|| 22,10 ± 0,01 g || 24,00 ±  0,03 g || 22.35 ± 0,03 g || 1.90 ± 0,04 ml

|-

|-

| [[Deco Band]]  || [[lever filler|lever]]  || 22,82 ± 0,01 g ||  ±  g ||  ±  g ||  ± ml

| [[Deco Band]]  || [[lever filler|lever]]  || 22,82 ± 0,01 g ||  ±  g ||  ±  g ||  ± ml

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{{CategorizeArticle|Principianti}}

{{CategorizeArticle|Principianti}}