Which limitation arose when early astrolabes were constructed with cast bronze instead of machined brass?

💡 Explanation

When cast bronze was used instead of machined brass in early astrolabes, the coarser casting process introduced dimensional inaccuracies because of uneven cooling and shrinkage, limiting precision. Therefore scale accuracy was reduced, rather than corrosion increases, expansivity, or manufacturing cost changes each requiring different physical mechanisms related to material properties and fabrication.

• Which structural enhancement during 18th-century ship construction primarily reduced the risk of hogging under wave stress?
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