huh! thank you.
Alice Tangerini wrote:
> Acetograph refers to a type of mechanical pen made by Koh-I-Noor
> Rapidograph which was discontinued years ago and replaced by the
> SL and Rapidometric pens. H.R.S. is the Humidified Revolving Selector,
> storage system to hold the pens and keep them humidified and therefore
> always ready to use. This required adding water to the base of the
> almost daily to keep it "humidified".
> Informationis from 1976 Koh-I-Noor catalog.
> Alice Tangerini
> Botany Department
> Smithsonian Institution
M. K. Rasmussen
REAL LIFE ART
"Go where you want to be and park it." ---Martha Himes Dickason