Wilson's Dictionary of Bible Types
Isaiah 40:12 (b) This is a symbol of the power and wisdom of GOD in putting chemicals together in combination by weight. All chemical combinations are put together by weight and not by volume. All of the combinations of metal, minerals, etc., in the mountains and hills are put together by weight.
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Watson, Walter. Entry for 'Scales'. Wilson's Dictoinary of Bible Types. https://www.studylight.org/dictionaries/eng/wdt/s/scales.html. 1957.