The instrument is based on Mason's research device. A composite oscillator of the Quimby‐Rose type is made by combining the author's split tube torsional barium titanate transducer with a hollow stainless steel immersible head. Strip element ultrasonic viscometers of the magnetostrictive type have been used industrially but have been found to be somewhat fragile. The new device is far stronger at any given sensitivity; moreover the construction is readily adapted to use new stable piezoelectric materials. In a modified form hot liquids can be measured and in another form, high surface displacements can be generated; this feature may be required for testing two‐phase systems incorporating large particles. Electronics require little modification for use with either strip or torsional type transducers. Remote control and indication together with computation from multiple test heads can be effected with either.