G.Glass
A manufacturer of industrial sight glasses glass-pipes and discs, micro electrodes small scale glassware,customized production of glass instruments for industrial,educational and scientific applications.
http://www.g-glass.com.au/

Backflow Test Fittings
No more teflon on your backflow test fittings! You no longer need to put teflon tape around your fittings and then have to clean them off before you can test another backflow.
http://www.backflowfittings.com

Okandan Glass
Okandan Cam San. Ve Tic. A.S.
http://www.okandanglass.com/

Ozone hardware
Welcome to Ozone Hardware.
http://www.ozonehardware.com

Fop Sight Company
Archery Bow String Peep Sight
http://fopsight.com

ATM Projects Page
8 inch Dobsonian, reflex sight, barndoor mount, quadrant, and sight tube, and images.
http://www.geocities.com/kendurkin/AstronomyPage.html

Custom Glass Corporation
Custom Glass Corporation offers Custom Fabricated Glass, Specialty Glass, Bent Glass, Bulletproof Glass, Silk Screened Glass, Security Glass, Transportation Glass, Bullet Resistant Glass, Safety Glass, and much more
http://www.customglass.com

NGF Canada Ltd
Manufacturer of specialised glass fibre, rubberized glass cord and glass flake. Owned by NGF (Europe), part of NSG (Japan). E-glass, K-glass and U-glass
http://www.ngfcanada.com

L.J. Star, Inc.
Metaglas safety glass products, sanitary service products, visual flow indicators, sight glasses, ports and gages, accessories.
http://www.ljstar.com/

T. G. Rankin Company
Providing our customers with the highest possible value is creed, which guides each of four divisions: Glass, Industrial, Plumbing and OEM.
http://www.tgrankin.com/