[Milsurplus] LM Cloudy Dial Window

[Michael D. Harmon]

Hi Bill,

I've worked on a bunch of BC-221s (not LMs), and I'm guessing that the 
plastic in the window lens is probably celluloid. Celluloid has a bad 
tendency to warp and cloud up with age (ex. the windows over the 
calibration book).  Plastic polish probably won't clear it up, because 
it's probably the plastic itself that's deteriorated, not just the 
outside finish.  If you have a piece of plastic with a fiducial line and 
can cut it to size, That's probably your best bet.

The little rivets holding the plastic to the front panel are about a #2 
or #3 in size, and are probably brass.  You might try chopping off the 
riveted side behind the panel with a really sharp chisel.  If that will 
free up the plastic and frame, then you could probably get some #2 or #3 
screws and nuts, hold the nuts with tweezers and try putting the new 
window on that way.  Maybe it will work, maybe not, but at least you 
tried!  Believe it or not, I've fixed a rotary switch with a burned-off 
contact by scrounging a contact from another switch and mounting it with 
#0-80 hardware!

If you can't find tiny hardware in your area, try McMaster Carr. They 
aren't particularly cheap because you have to buy them in lots, but they 
have an amazing inventory.  Get the black oxide phillips screws, and 
you'll never be able to tell they weren't original.

https://www.mcmaster.com/screws/rounded-head-screws/phillips-rounded-head-screws/18-8-stainless-steel-pan-head-phillips-screws-11/

Good Luck!

Mike, WB0LDJ