The traditional altimeter Thommen is replace by the Opti-treck instrument.
For more Informations
PERRET OPTICIENS 4, Ave Cardinal-Mermillod CH-1227 CAROUGE/GENEVA SWITZERLAND
Tel.: +41.22.342.17.42 Fax.: +41.22.300.08.84 URL: http://www.perret-optic.ch Email: info@optics-shop.com
