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Streak plate is an unglazed piece of porcelain, such as a tile, used to test the characteristic streak of minerals by rubbing the mineral across the tile.
Added 2/16/2017 7:43:16 PM
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8
A wind vane is an instrument for showing the direction of the wind.
Added 2/16/2017 7:43:44 PM
This answer has been confirmed as correct and helpful.