Tools used to measure length include a ruler, a Vernier caliper, and a micrometer screw gauge. Vernier calipers and micrometer screw gauges are more precise and can be used to measure the diameter of objects like pipe and wire.
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Answer:
5 gemstones
Explanation:
There are 60 gemstones and there are 6 groups to which the gemstones are distributed equally.
So, each group will have
Now, out of the 
groups one group is taken and split into two equal halves so the halved group will have
So, each friend will have 5 gemstones.
The answer is to help the reader visualize a house bordered by smaller cottages
<em>He was spending his summer vacation, as he always did, with his mother at Grand Isle. In former times, before Robert could remember, "the house" had been a summer luxury of the Lebruns. Now, flanked by its dozen or more cottages, which were always filled with exclusive visitors from the "Quartier Français," it enabled Madame Lebrun to maintain the easy and comfortable existence which appeared to be her birthright.</em>
The author uses the word <u>flanked</u> meaning, according to Cambridge<em> "to be at the side of someone or something"</em> to let the reader imagine a large, luxurious and expensive house surrounded by small cottages but equally important since they were exclusive to the inhabitants of the French quarter.
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