Degree twaddle

The degree Twaddle (Twaddell) ( symbol : ° Tw ), named after the Scottish inventor William Twaddle , was a unit used mainly in Great Britain for the relative density of liquids that are heavier than water. Occasionally, the Twaddle degree is still used in English-speaking countries in the dairy and leather industries.

The relative density at 15.56 ° C is calculated as follows: ${\displaystyle d}$

${\displaystyle d={\frac {\text{°Tw}}{200}}+1}$

1 ° Tw = 0 ° Bé = 1.25 ° Bx = 5 ° Q = 1.005

swell

• Gustav Theodor Gerlach : A mutual comparison of the general hydrometer scales with the corresponding specific weights; by Dr. G. Th. Gerlach in Kalk near Deutz. In: Polytechnisches Journal . 176, 1865, pp. 444-461.
• Russ Rowlett and the University of North Carolina at Chapel Hill: How Many? A Dictionary of Units of Measurement. In: unc.edu. Retrieved November 16, 2015 .