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	Helpful Info Quote/Order Form - Complete our Online Form or download a PDF (377KB) Advanced Glass Industries Standard Terms and Conditions Optical Material Standards for Quality Level (424KB pdf) Birefringence Reference Chart (399KB pdf) Bubble Quality Information and Index Tolerance (384KB pdf) Nomogram Wavefront Distortion/Homogeneity (406KB pdf) Scratch/Dig Reference Chart (385KB pdf) Simple Lens Approximations (378KB pdf) Prisms Frequently Used in Optical Systems (1 MB pdf) Flatness Reference Chart (648KB pdf) Diopeters-Inches-Millimeters Reference Chart (780KB pdf) Helpful Hints for Quoting Blanks for Budgetary Purposes (461KB pdf) Glass Reference Charts (3 MB pdf) Print Symbol Reference Chart (588KB pdf) Reference Angle Conversion Charts (654KB pdf) Angle Formulas Reference Chart (1.1 MB pdf) Conversion Reference Charts (563KB pdf) Contact Advanced Glass Industries View our list of Optical Glass Products and Optical Glass Manufacturing Capabilities Learn why AGI is the premier supplier of Optical Glass, Plate Glass, Fused Silica, Fused Quartz, Pyrex, Filter Glass, Zerodur and Industrial Glass
	Copyright 2010, Advanced Glass Industries Suppliers of Pyrex telescope light weight mirrors, cellular light weight telescope mirror blanks, SUPREMAX telescope light weight mirrors, precision machined optical glass blanks and molded glass blanks made of fused quartz, fused silica, optical glass, pyrex, filter glass, zerodur and industrial glass.