[Sensor Sub-Component] Water Level Sensor Housing

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This Is A Two-Piece Thing: Top Tube And Bottom Tube. This Thing Combines With My [Sharp Gp2Y0A21 Ir Sensor Housing](Http://Www.Thingiverse.Com/Thing:808262) And [Ir Sensor Puck](Http://Www.Thingiverse.Com/Thing:819267) To Form An Infrared Water Level Measurement Sensor. - The Two Pieces Fit Together In A Friction / Pressure Fit. The Cylinder Is Perforated To Provide Visual Indication Of The Puck, Water Level, And Any Obstructing Debris. - The Top Three Threads Are 4Mm Ansi M Metric Threads At 17Mm Deep, And Join The Ir Sensor Housing To The Tube Structure. If I Were To Re-Mix This Part, I Would Remove The Side Perforations, And Replace Them With A Vertical "Window", Either Completely Plastic-Free, Or With A Transparent Material. This Would Eliminate Ripples In The Body Of Water From Affecting The Puck And Therefore The Sensor Reading, By Extending The Tube Under The Water'S Surface. I Might Add An "Intermediate" Tube Section, So Users Can Extend The Housing, Up To 80Cm Long (Sharp'S Listed Max Distance For The Ir Sensor) I Will Coat The Part In An Inert, Non-Toxic, Lac-Based [Spray Enamel](Http://Www.Amazon.Com/Rust-Oleum-Zinsser-408-Bulls-Shellac/Dp/B0009X8Hwg) To Prevent The Degradation Of The Abs Plastic In Water.

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