Dismantled beam and pans of replica of Black's balance, (of late 18th century). Dismantled beam and pans of replica of Black's balance
Dismantled carcase of replica of Black's balance, (of late 18th century). Dismantled carcase of replica of Black's balance
Copy of Cavendish chemical balance (of late 18th century). White metal beam and wood and brass beam supports. Copy of Cavendish chemical balance
