1) Certification mark 2) Explosion protection
Found on
https://www.crosswordclues.com/clue/baseefa
Baseefa (`British Approval Service for Electrical Equipment in Flammable Atmospheres`) is a British certification body for equipment intended for use in potentially explosive atmospheres. It is based in Buxton, Derbyshire, England. Baseefa is an ATEX Notified Body and an IECEx Certification Body. Baseefa Limited has operated as a private company.....
Found on
http://en.wikipedia.org/wiki/Baseefa
No exact match found.
