Thomsen is a universal-style dental float. The head is hinged to float more accurately on upper or lower molars.
Blade is tungsten carbide for long life. Concave shape locates better on teeth surfaces. Flat blade
available as option.
Dimension is shaft length overall, including handle.
This is a quality tool from USA.
The Haussmann design gives maximum security and control to the operator. The ratchets are spring-loaded and easily operated to control mouth opening.
The Economy model is of the same good design but is of poorer quality manufacture, and made from cast stainless steel, as compared to high-tensile stainless steel of the Quality model.
Thus the Economy model is more susceptible to breakage and dama..