It's really not a bad chore, Bob. I've had the tuna can off of my Viking II
meter several times the last few months.
But I understand your trepidation about the chore itself and the Viking II
is certainly not a "pocket portable." Short of dismantling the tuna can my
suggestion would be to make a "strap" of some highly adhesive tape (like
packing tape), bend the ends outward to attach each end to the face of the
meter like two flanges. Use any bonding agent that is made for glass (DUCO I
have found to be good). Super Glue? Uh-uh. Super Glue is the most overrated
glue on the market. They make a version that is "for glass" and it is like
trying to glue something with the crust you wipe out of your eye in the
morning. Drop no more than a miniscule drop of cement in each corner of the
meter opening while pulling on the tape "strap" then secure the strap
somehow to keep the outward pressure on the meter glass until the glue sets
up. Don't get too liberal with the drop of glue. I also wouldn't try to put
a drop at the 12 o'clock upper part of the Viking II unless you can
physically rotate the whole transmitter upside down to prevent the drop from
dripping across the meter glass which could become a mess to clean/scrape
off. In the bottom two corners if it oozes slightly to the southwest or to
the southeast you risk getting it on the meter movement...then you have a
real problem. Reconsider swallowing hard and removing the meter. Once you
disconnect the meter leads the rest comes out and comes apart easily. Good
luck.

WA9VLK