Convert from truss to seer [Pakistan]

Unit Definition (truss)
The truss is a traditional weight unit, generally equal to 4 stone or 56 pounds (about 25.4 kilograms). The truss was used primarily for measuring hay. In 1795, Parliament specified that a truss of hay should equal 56 pounds for old hay or 60 pounds (about 27.2 kilograms) for new hay.

Unit Definition (seer [Pakistan])
The seer [Pakistan] is a traditional weight unit in India and South Asia. In Pakistan, the seer is now considered equal to the kilogram. The unit is sometimes spelled ser.