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Troy Mass Standards
Most pieces of this set were made by Allan Pollack in Boston in 1836. However, one of its twenty-eight pieces – the 1 lb troy standard – was copied by Superintendent Hassler in Washington from the troy pound of the U.S. Mint. An inventory pinned to the inside of the set’s lid bears Hassler’s signature. This suggests that the set may have been commissioned by Hassler and derived from the 1 lb troy standard that he provided. Hassler may have let contracts for some of the Coast Survey’s work in producing mass standards for the custom-houses and states.