Abstract: A drilling fluid monitor system includes a pump fluidically connected to the drilling fluid to withdraw fluid from that system and move it to a scale that includes two coils through which the withdrawn fluid is circulated. The coils are positioned on a scale so the withdrawn fluid can be accurately weighed and returned to the drilling system via the pump.

Abstract: A boat flotation collar is set forth wherein a generally "U" shaped upwardly oriented bumper guard is positioned longitudinally of a boat and attachable thereto. Within the upstanding "U" shaped bumper guard is an inflatable bag or series of bags that upon raising of a float within the interior of a boat by rising water will open a valve secured to a compressed gas bottle. Inflatable pneumatic cells positioned within the "U" shaped bumper guard will thereby be inflated to prevent the associated boat from sinking.