Normally, brake fluid is brown. If the fluid looks dark or black, it may need to be replaced but further testing is needed. Brake fluid is hygroscopic, which means that over time, it absorbs moisture from its surroundings. Moisture dilutes and weakens the effectiveness of brake fluid, which leads to braking systems components to corrode. In 18 months, brake fluid can have up to 3 percent water, which can lower its boiling point from 40 to 50 percent. New DOT 3 specification brake fluid is to have a dry boiling point of 401 degrees Fahrenheit (205 degrees Celsius) and a wet boiling point of 284 degrees (140 degrees Celsius), while DOT 4 fluid is to boil at 446 degrees (230 degrees Celsius) dry and 311 degrees (155 degrees Celsius) wet. The lower the point at which the brake fluid boils, the less effective it is. Your mechanic should have both an optical refractometer and electronic brake fluid tester to perform these tests for you as part of an automotive checkup.
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One-sentence summary -- Check the brake fluid color. Test for moisture content with an optical refractometer. Evaluate the brake fluid's boiling point with an electronic tester.

Take a measuring tape, and wrap it around your head where you want the hat to sit. Take the measuring tape off, note your measurement, then divide it by 2. For example, if your head circumference is 22 inches (56cm), then your new measurement is 11 inches (28cm). If you don't have a measuring tape, wrap a piece of string around your head, then hold it against a ruler. The base of the triangle should be half of your head circumference. The height of the triangle should be whatever height you want the hat to be. Drape a measuring tape across the top of your head. Decide where you want the tip of the hat to hang, then use that measurement for the height. For an adult hat, make it about 14 inches (36cm) tall. For a child's hat, make it about 13 inches (33cm) tall. But it also depends on a person's height. Cut a strip of white fuzzy fabric 1 inch (2.5cm) longer than your head circumference. You need to make the strip twice as wide as you want the trim to be, plus 12 inch (1.3cm) for the seam allowance. For example, if you want it to be 2 inches (5.1cm) wide, cut it 412 inches (11cm) wide. White fur is the most popular, but you can use white felt or fleece as well. If you aren't sewing the hat, make the strip the same width that you want the trim to be. For example, if you want it to be 2 inches (5.1cm) wide, then cut it 2 inches (5.1cm) wide.
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One-sentence summary -- Divide your head circumference by 2. Draw a triangle on a sheet of paper based on your new measurement. Cut a strip of white faux fur for the trim.

So you've decided to go for it. How do you get started spying? One method is a simple glass held against the wall. The reason this works is that you create an "acoustic coupling" between the wall and the glass, allowing sound waves to travel from one side to the other. A soda or beer glass works best. Some eavesdroppers also swear by Dixie cups, but glass seems to conduct sounds better than other kinds. Experiment with different types and shapes of glasses to see which one works best for your purposes. If you have an iPhone, you can download the Amplitude Pro app and hold the iPhone to the glass against the wall. This app allows you to hear distant sounds much more clearly, but it also records and saves the amplified noise. Some places on a wall will transmit sound more clearly than others for reasons of structure or distance from the source of the sound. Experiment to test the sound quality, until you find the best place. Sometimes this can be difficult if the sound is coming from the ceiling. If you're too far away from the sound on the wall, you won't hear things very clearly. Remember, in order for it to work you have to couple the wall and glass acoustically. Do this by placing the glass flat, rim down, against the wall. Now sound waves will go from the wall into the glass and make it easier for you to detect them. Once the glass is in place, put your ear to the bottom of the glass. Continue to move the glass on the wall if you can't hear well.
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One-sentence summary -- Get a glass. Scout for the clearest spots. Place the rim of the glass against the wall.

It's up to you whether you want a single color or a variety of colors. Just be aware that while using more than one color can produce a "designed" effect, too many colors may disrupt the flow of the quotes. Choose markers that have a strong pointed felt tip. If you can't find a Sharpie pen, look for a permanent paint pen that gives you the same command as a ballpoint pen. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/3\/3c\/Create-a-Quote-Teapot-Step-3Bullet1.jpg\/v4-460px-Create-a-Quote-Teapot-Step-3Bullet1.jpg","bigUrl":"\/images\/thumb\/3\/3c\/Create-a-Quote-Teapot-Step-3Bullet1.jpg\/aid2470774-v4-728px-Create-a-Quote-Teapot-Step-3Bullet1.jpg","smallWidth":460,"smallHeight":307,"bigWidth":"728","bigHeight":"486","licensing":"<div class="mw-parser-output"><p>License: <a rel="nofollow" class="external text" href="https:\/\/creativecommons.org\/licenses\/by-nc-sa\/3.0\/">Creative Commons<\/a><br>
<\/p><p><br \/>
<\/p><\/div>"} You don't want the first mark to be on the teapot, as your pen may not be fully inked. Write a few words on a separate sheet of paper first and get a feel for how the pen writes first. Once you're happy that it's flowing properly and that you can write with it comfortably, then apply it to the teapot. Try an inconspicuous part of the teapot first, to see how it looks and to test how it sets.
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One-sentence summary --
Use Sharpies (permanent marker pens) or paint pens for writing the quotes. Test drive the pen before applying it to the teapot.