Tool Box: goniometer & ruler
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Noise Dosimeter NIOSH & OSHA
ToolBox: AR Ruler, Level Tool
White & Pink Noise
Decibel : dB sound level meter
Car Decibel Sound Level Meter
Guitar & Ukulele Tuner
Find a Cat
Light Meter - measure luminosity in lux, fc, lumen
Leo the Cat - Fun Stickers
dB Meter & Spectrum Analyzer
