Mike, sorry to hear about your air meter. I too worry about theft. I installed an alarm in my garage which, in addition to making a deafening noise, calls my cell phone if it goes off....I have one for sale if you are interested.

http://www.oldgas.com/forum/ubbthreads.php?ubb=showflat&Main=83826&Number=510944#Post510944

Ed from South Jersey