Material testing instruments and machines for using optical interferometry to obtain film thickness measurement, balloon and catheter thickness measurement, industrial film multi-layer thickness measurement, and thickness measurement of coating glass, mesh stents, silicone wafers, and other light-permeable materials all for scientific use; Scientific apparatus, namely, sensing and signaling devices for measurement and quality control of materials processing by laser; Optical devices, namely, fiber-optic measurement instruments, high precision thickness measuring and gauging instruments, film measuring instruments, dimensional measuring instruments, and optical comparator instruments, all for scientific use

'apparatus':48 'balloon':15 'cathet':17 'coat':31 'compar':87 'control':58 'devic':53,65 'dimension':82 'fiber':68 'fiber-opt':67 'film':12,21,79 'gaug':77 'glass':32 'high':72 'industri':20 'instrument':3,71,78,81,84,88 'interferometri':9 'laser':63 'layer':24 'light':40 'light-perm':39 'machin':5 'materi':1,42,60 'measur':14,19,26,29,55,70,75,80,83 'mesh':33 'multi':23 'multi-lay':22 'name':49,66 'obtain':11 'optic':8,64,69,86 'permeabl':41 'precis':73 'process':61 'qualiti':57 'scientif':45,47,91 'sens':50 'signal':52 'silicon':35 'stent':34 'test':2 'thick':13,18,25,28,74 'use':7,46,92 'wafer':36

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