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and low-resource environments
Attractive chrome finish on the base and gas lift
50/60Hz Input Power 20 VA Battery Type Li+ battery CGR18650 Fuse T 500mAL 250V Operating Mode Continuous Viewing Lens Range 0
and reduces noise and avoids dust absorbing
581-901 | Slide-in optic bars opti+ instruments and low-resource environmentsSlide in Optic Bars (Set of 2) Fast, repeatable screening with stepped diopters. These slide in optic bars drop into the accessory slot of compatible vision testers and chart systems, giving you an immediate way to simulate refractive error in controlled steps. Each bar features multiple pre set lenses arranged in a clean, high contrast carrier so you can switch powers in seconds and keep your workflow moving. Key Benefits Quick simulations: step