https://www.suunto.com/sq-al/Support/faq-articles/ambit3-vertical/how-to-set-a-new-altitude-reference-value-in-suunto-ambit3-vertical/
Suunto Ambit3 Vertical - Learn how to set a reference altitude.
how toa newreference valuesetaltitude
https://www.kmu.gov.ua/en/news/z-1-sichnia-2026-roku-na-terytorii-ukrainy-vprovadzhuietsia-vykorystannia-ievropeiskoi-vertykalnoi-referentsnoi-systemy
On 1 January 2026, Ukraine officially began using the European Vertical Reference System (EVRS), which was an important step in harmonising the national...
vertical reference systemjanuaryeuropeanintroduced
https://www.suunto.com/it-sm/Support/Product-support/suunto_vertical/suunto_vertical/reference/ce/
vertical referencesuunto
https://www.helicoptersmagazine.com/vih-aerospace-receives-stc-approval-for-vertical-reference-window/
Aug 19, 2021 - VIH Aerospace, a helicopter manufacturing, maintenance, repair and overhaul (MRO) service provider has received Transport Canada STC approval for their H135
vertical referencevihaerospacereceivesstc