Harrison & Sons IIIa = hardly any grooves at the front, the back shows a "hilly" profile at times |
De H&S IIIa zeefartructuur heeft vrij grove verticale [schering-] draden [<30/cm] en min of meer symmetrische diagonalen - the H&S IIIa wire structure has a rather corase verticale threads structure [<30/cm] and more or less symmetrical diagonals. De satijn-structure heeft asymmetrische digonalen en is fijner [>30/cm] - the satin-structure has asymmetrical diagonals and a finer structure of vertical threads [>30/cm]. |
|
|
|
|
|
Harrison & Sons III -60/60 [+/- 5
degr.) = many irregular grooves at the front, 1-4mm long, the back
shows slightly ascending/descending lines in respect to the horizon
(of the direction of paper)
|
(!B Harrison & Sons IIIa = many irregular grooves at the front, 1-4mm long, the back shows slightly ascending/descending lines in respect to the horizon (of the direction of paper)
|
Harrison & Sons III -60/+40 = very similar to IIIa as far as the front goes
|