Overhead camera rig

This overhead camera rig is created around my existing tripod (Cullmann 54101) and a square aluminum extrusion bar (https://www.bauhaus.info/metallprofile-kunststoffprofile/kantoflex-rechteckrohr-/p/10521981) with a 35.5mm x 19.5mm size. As a counterweight I use a bottle of water (Volvic).
http://a360.co/2pcVQYd
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http://a360.co/2FIcO83
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http://a360.co/2pbFM8Y