How to Make a Hygrometer at Home

A homemade hygrometer, for determining the degree of moisture in the atmosphere, is shown in the accompanying sketch and consists of a board, A, with a nail at each end to hold the silk thread B. – – – Excerpt…
Do It Yourself Projects

A homemade hygrometer, for determining the degree of moisture in the atmosphere, is shown in the accompanying sketch and consists of a board, A, with a nail at each end to hold the silk thread B. – – – Excerpt…

A boomerang can be made of a piece of well seasoned hickory plank. The plank is well steamed in a wash boiler or other large kettle and then bent to a nice curve, as shown in Fig. 1. It is…

The stock necessary to make a morris chair of craftsman design as shown in the engraving can be purchased mill-planed and sandpapered on four sides as given in the following list: 4 posts 1-3/4 by 3 by 26 in. 2…

How to Build a Roll Top Desk The Desk Complete The materials for this roll top desk can be purchased from a mill dressed and sandpapered so the hardest part of the work will be finished. The wood must be…

To make this harmless and loud toy – the Paper popper, we need strong sheet of paper size 6,3 x 9,5 inches (16 x 24 cm) (or other sheet of paper with edge ratio 2:3). How to make a paper…

The easily made but practical apparatus described in this chapter supplies an incentive for learning the Morse telegraphic code, which is used for sending sound signals, and for visible signals transmitted by means of flags, lamps, and heliograph mirrors. Signaling is so interesting, and on occasion can be so useful, that no apology is needed for introducing signaling apparatus into this book.

To Make An Ant Farm You will need: 1. Put a 1-inch (2.5cm) layer of moist sand in the larger glass jar. 2. Find an ant hill in a dry place where the soil is loose. Poke the…

How to make a Hygrometer? – When you’re planning a picnic with your friends, you need to know that the weather will be fine so that you can enjoy yourselves. Many people need to know what the weather will…

What is an electromagnet and how does it work? An ordinary bar magnet has a magnetic field around it all the time. We call this kind of magnet a permanent magnet. You can also make a magnet by wrapping wire…