Comparison of the imperial and US customary measurement systems adopted a system based on the 231-cubic-inch wine gallon for all fluid purposes. This became the US fluid gallon. Both the imperial and US fluid gallon are divided into 4 quarts, 8 pints or 32 gills. However, whereas the US gill is divided into 4 US fluid ounces, the imperial gill is divided into 5 imperial fluid ounces. So whilst the imperial gallon, quart, pint and gill are about 20% larger than their US fluid measure counterparts, the fluid ounce is about 4% smaller. Note that one avoirdupois ounce of water has an approximate volume of one imperial fluid ounce
Gills Rock, Wisconsin Gills Rock, Wisconsin Gills Rock is an unincorporated community located on Highway 42 at the northern tip of the Door Peninsula in Door County, Wisconsin, United States. It is within the town of Liberty Grove and was formerly known as Hedgehog Harbor. The area was named for Elias Gill, a local 19th century landowner. Gills Rock has a strong history and tradition of commercial fishing, which continues to this day. The Door County Maritime Museum is located there. The area is also popular with scuba divers who explore the many shipwrecks in and around "Death's Door", the narrow strait connecting