Function 1. Observe thermal stress distribution after annealing 2. Measure glass tempering grade 3. Measure optical retardation caused by thermal stress in glass  Detecting object transparent glass products with complex construction. such as : glass container , glass handicraft ,glassware , tableglass , lamp penicillin bottle, light tube, light bulb,solar glass ,automobile glass etc Detecting methods Sensitive Color Tint Method and Senarmont Compensation method Specification Model PSV-413L Analyzer Diameter 78mm Viewing field 400 400mm Glass tempering grade 0-10 Measuring range ( Optical retardation ) 0-280nm Measure height ( adjustable ) Max 600mm Light Source Warm white LED light 10W Power 220VAC 50-60HZ Size W485 D584 H732mm Weight 14Kg
