| 1. | McNaught later became president of the American Watch Glass Company of Toronto.
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| 2. | In reference to this, large watch glasses are occasionally known as clock glasses.
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| 3. | Currently some watch companies are improving the crystal watch glass by testing the strength using the Vickers hardness test.
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| 4. | Some manufactures are promoting that they have watch glass at 6000 Vickers compared to other watches rating at 700.
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| 5. | Watch glasses are named so because they are similar to the glass used for the front of old-fashioned pocket watches.
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| 6. | Alternatively, a beaker may be covered with another larger beaker that has been inverted, though a watch glass is preferable.
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| 7. | Windsor visitors can also watch glass blowers, potters, and other artisans at work in the innovative See It Made industrial park.
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| 8. | Shallow glass evaporating dishes are commonly termed " watch glasses ", since they resemble the front window of a pocket watch.
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| 9. | Not only can a watch glass be used for observing precipitation patterns and crystals, it can also be used for drying solids.
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| 10. | He was adopted by his aunt, the wife of a silversmith, and started his working life as a hawker of watch glasses.
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