A garce is an obsolete unit of measurement.
In India, a garce was a unit of dry volume approximately equal to 5,244 litres (149 US bushels). In Sri Lanka, it was approximately 5,084.8 litres (144.29447 US bushels).
A garce was also a unit of mass in Sri Lanka approximately equal to 4,198.518 kg (4198.518 lb). After metrication by both countries in the mid-20th century, the unit became obsolete.
References
Garce Wikipedia(Text) CC BY-SA