What instrument is used to measure the strength of a magnetic field?

More Questions:

What physical fitness practice is named for the Sanskrit word for "union"?

What company has a mascot named Poppin" Fresh?

Which artist created the appearance of Babar the Elephant?

What is the Paris Gare Du Nord?

What is the more common name for Tympanum?

What country did poinsettias originally come from?

How many oxygen atoms does a molecule of ozone have?

Which tree is the only nut-bearer native to North America?

Who played the role of Mayor Randall Winston on the TV show "Spin City"?

What Virginia-born country musician died in a plane crash in 1963?

The 2002 US film "The Ring" is based on a 1990's film produced and released in what other country?

Where was Albert Einstein born?

What year saw the completion of Big Ben?

Which US President fathered children with former slave Sally Hemmings?

Reed Richards was a member of which superhero team?