Pissavini Roughness footnotes

 a The Altisurf 500 lab workstation is an apparatus from Altimet, France.

b The Mountain Altimap microtopography software module is a product of Digital Surf, Besançon, France.
c Helioplates [INCI: Polymethylmethacrylate (PMMA)] is a product of Helioscreen, Creil, France. 
d Helioplates HD6 [INCI: Polymethylmethacrylate (PMMA)] is a product of Helioscreen, Creil, France. 
e The Labsphere UV-1000 S Transmittance analyzer is a device from Labsphere, North Sutten, NH, USA.