You might try checking out http://www.auralens.com for lenses etc.
They have some specialized ones made for screening out the sodium
flare that glass lampworkers run into. Glad to have something to
contribute.
Dan Wellman
You might try checking out http://www.auralens.com for lenses etc.
They have some specialized ones made for screening out the sodium
flare that glass lampworkers run into. Glad to have something to
contribute.
Dan Wellman