Goniometer (Sessile Drop)
thingiverse
A goniometer apparatus, utilizing a sessile drop method, measures liquid contact angles via a USB microscope setup. Required components include a USB microscope, 1/4"-20 thread rod and nut, M3 screws, and superglue for the sample stage, optimized for a microscope slide. Version 2 is displayed as version 3 prints; the shapes.scad file is necessary to view the microscope stage in OpenScad. Assemble according to instructions, gluing the top knob and nut on the slide, adjusting the back clamp for a snug USB microscope fit, and using colored card stock in the slot behind the slide for optimal drop imaging.
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