Densimeter

A densimeter for determining density of a fluid in which at least portions thereof are submerged, said densimeter comprising:

• a first float means submergible in said fluid and having a first position marker means provided therewith, said first float means being provided along a guide means between a first pair of support means;
• a first pair of axial translational force means each having a pair of ends and each being capable of being extended or contracted in length between said ends along a primary axis thereof to an extent depending on magnitudes of axial forces exerted therebetween, said first pair of axial translational force means each having one said end thereof connected to said first float means and each having that remaining said end thereof connected to a different one of said first pair of support means such that said first float means can move between said first pair of support means over a range of positions along said guide means;
• a reference position marker located outside said range at a fixed position along said guide means;
• and
• a position determination means extending at least in part along said guide means past said reference position marker and past one of said first pair of support means, said position determination means being capable of measuring relative positions of said first marker means over said range of positions while also measuring said fixed position of said reference position marker.