Convert from quarter (ton) [US] to flask

Unit Definition (quarter (ton) [US])
The quarter (ton) [US] is a traditional unit of weight equal to 1/4 hundredweight. In the U.S., "quarter" is also used informally to mean 1/4 ton, or 500 pounds (226.80 kilograms).

Unit Definition (flask)
The flask is a commercial unit of weight formerly used to measure liquid mercury (or quicksilver, as it was called). The flask was equal to 76.5 pounds avoirdupois, which is equivalent to almost exactly 34.7 kilograms.