This is rough sketch switch drawing. 5/8 inch diameter pipe with wood top plug drilled with two bolts with bottom of pipe crimped or method to hold close fitting moving cork with conducting plate mounted on cork top. Bottom heads of bolts is electrical contacts for when cork inside tube with contact plate floats up to contact bottom of bolts. Top bolt nuts is for long twisted wire connections to light or bell alarm. Mark lowering wire or cord then pull from well to measure.
