Weigh the cost of building versus the return on your investment in the balance and you may find a granny flat can offer a great return for years to come and can add value to your home should you decide to sell. *Cost and prices in this article are indicative and should only be used as a guide.
The needles are generally made of a heat-treatable stainless steel or carbon steel. To prevent corrosion, many are nickel plated. Depending on the style of device used, the main body of the tube can be made of plastic, glass, or both.
Earliest compasses were made of lodestone, a particular form of the mineral magnetite. The first compass was a lump of lodestone that was tied to a rope and left to hang freely. Other were also made from lodestone but were shaped like a spoon or a ladle whose handle was made to point south.