Columbia subject headings:
Harvard subject headings:
Arnas, A. Naim--Scientific apparatus collections.
Balances (Weighing instruments)--Private collections.
Measuring instruments--Private collections.
Weighing instruments--Private collections.
Weights and measures--Private collections.
Princeton subject headings:
Arnas, A. Naim.
Balances (Weighing instruments)
Measuring instruments.
Weighing instruments.
Weights and measures.