March 2003 page 35
E. Th. Theodossiou
P.G. Marchos
V. N. Manimanis

The Sundials at the Skalnate Pleso Observatory, Poprad (Slovak Republic), and in Otzenhausen (Germany)

Survey of modern educational sundials installed at observatories in Slovakia and Germany, designed with scientific and pedagogical aims.
Dials: Vertical