• 3 Memorial Library

• 3 Certification
• 3 Measuring instruments
• 3 Scales (Weighing instruments)
• 3 Weighing instruments

• 2 National Conference on Weights and Measures
• 1 National Institute of Standards and Technology (U.S.)
• 1 National Institute of Standards and Technology (U.S.). Office of Weights and Measures

• 3 English

• 3 United States

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