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How to Read the Lines on a Heart Monitor

You may not be a cardiologist, but you can glean a certain amount of information from the lines on an electrocardiogram (EKG). Still, it’s important to leave the true reading and diagnosis to trained healthcare providers whose profession it is to detect abnormal sinus rhythms. Deciphering peaks and valleys Compare your EKG to the normal […]



How to Use Freon Gauges

A vehicle owner who wishes to charge his air conditioning system soon finds out that the procedure does not involve simply hooking a can and a hose up to the engine and turning a valve. Some AC units have to be completely evacuated, then pulled for vacuum and then recharged. The use of AC gauges […]



How to Read an Indicator Color Chart

Indicator color charts come in different varieties and are used to show the pH of a substance. Chemical compounds that change color in response to acid or base materials are usually embedded in a piece of paper or other substrate. The substance being tested is then applied, turning the compound a new color. The simplest […]



How Do I Enable the Fingerprint Reader on My HP Pavilion?

Fingerprint readers, security devices used to keep unauthorized people from logging on to your computer, are available on a variety of computer systems including the Hewlett-Packard (HP) Pavilion. The reader works by placing one of your fingers onto the reader’s scanning device. The fingerprint reader then scans your finger and lets you access your computer. […]



How to Check Coil Packs With a Voltage Meter

A faulty coil may fire intermittently, produce a weak spark or kill a cylinder completely. Coils are sensitive to heat and may produce an intermittent problem if their internal components become weak. Once the winding inside weakens or breaks, the problem is irreversible. However, you can test the coil pack on your car using a […]



How to Know If You Need Eye Glasses

Knowing whether you need eyeglasses can be challenging if you do not know the signs to look for. If you have trouble seeing or difficulty focusing, it may be time to consider whether you need eyeglasses. But there are more subtle signs you may not know about that can help let you know if you […]



How to Read a Line of Tab-Delimited Text in VBA

Being able to read a line of tab-delimited text using Visual Basic for Applications and parsing each of the words can make your VBA application more dynamic. Often programmers need to read tab-delimited files and display the contents of those files. In VBA, use the “OpenTextfile” method to open a text file that contains tab-delimited […]



How to Check Blood Pressure

Blood pressure machines are popular right now. But taking your pressure manually with a simple cuff and stethoscope will render an accurate reading. Just follow these steps. Purchase a blood pressure cuff like your doctor uses. It wraps around your arm and has a pump. You can find these in pharmacies or drug stores. They […]



How to Read Grain Direction in Wood

Whenever you are cutting, sanding, painting or staining wood, knowing the direction in which the grain of the wood travels is vital to success. Performing any of these tasks against the grain of the wood will create an uneven, rough and unattractive finish that will mar the surface of whatever you intend to use the […]



How to Read an XLA File

A file with the file extension XLA is a Microsoft Excel add-in file. XLA files are normally invisible to the user, except for the added functionality provided by the files. However, you can read an XLA file from within the Excel application, and can also convert an Excel workbook into an XLA add-in file, then […]



How to Read a Mini DVD-RW

A mini DVD-RW disk is a recordable disk that is about half the physical size of a regular DVD-RW. Because of this, it can store about half of the total amount of data that a regular DVD-RW can store. All computer DVD drive disk trays have a small indentation inside of them for the purpose […]



How to Read Body Language

Learn all about body language signals for lying, confidence, flirting, and insecurity and how to read other body language in this free video series on body language communication skills. Series Summary Body language is a curious thing. We humans move our bodies and send and receive signals we are often unaware of. This language of […]



How to Read an Excel Spreadsheet in Visual Basic

Excel spreadsheets are popular files used to store finances and sales analytical data. Programmers can use these spreadsheets to automate process and import data to an application, manipulate the values, and display them for users. It’s also useful to read data from a spreadsheet and export it to a larger database like Microsoft SQL Server. […]



How to Read an Echocardiogram

An echocardiogram is a medical test using sound waves to construct a moving picture of the heart. A transducer is used in performing an echocardiogram by sending out high-frequency sound waves and transmitting the echoes of the signals into electrical impulses. This test is used to check heart chambers and valves, allowing doctors to diagnose […]



How to Become a Blueprint Reader

Blueprints are the technical drawings created for the construction and manufacture of homes, structures and parts. Blueprints use highly specialized symbols and designations that tell builders, machinists, welders, engineers and others exactly what materials must be used and how items are put together. They help to coordinate the work of many kinds of workers to […]



Jobs That Don’t Require Reading

The jobs that don’t require reading tend to be the same jobs for people that don’t speak English very well in this country, and those tend to be labor intensive. Even medial work like retail still requires them be able to read the keys on the cash register, and searching for jobs requires they be […]



Dangerous High Blood Pressure Readings

High blood pressure, or hypertension, occurs when the force of blood pushing against a person’s artery walls is stronger than it should be. Blood pressure is always measured with two numbers: systolic, when the heart pumps blood, and diastolic, when the heart relaxes. Systolic is the first number written or spoken in a blood pressure […]



Why Is it Important to Read Labels?

If you take the time at the supermarket to pause and inspect the nutrition labels of the food you buy, you’ve already taken a significant step in improving your health. Being familiar with the nutritional value of what you plan to eat helps you keep on track with your diet, eat foods that nourish your […]



How to Read a Pareto Chart

The Pareto rule, often called the 80/20 rule, is a tool for diagnosing a business problem. The rule says that a problem has multiple causes, and that 20 percent of the causes account for 80 percent of the problem. Reading a Pareto chart identifies 20 percent of the causes so that you can correct them […]



How to Read T-Scores

A T-score measures deviations from normal. When used to check for osteoporosis, your T-score compares your bone density to that of other adults. Your T-score determines your degree of bone loss and helps you predict your risk for bone fracture. Knowing your risk allows you to weigh different options for increasing bone density, such as […]