best brand of reading glasses


How to Read a Rotameter From the Top

Rotameters are used to measure the flow rate of a gas through an orifice or series of tubing. There are many different types of rotameters available on the market today; most of them work based on gravity. The gas flow causes a small ball to rise in a graduated column, while gravity pushes down. This […]



How to Read a GM Vin Number

GM vehicles, like all other vehicles, have a vehicle identification number (VIN) that provides a unique identifier for each vehicle. The VIN is stamped onto a plate attached to the left side of the vehicle’s dashboard and can be most easily viewed from the outside of the vehicle by looking through the front window. A […]



How to Read a Vernier Scale on the Theodolite

Perhaps you have seen a team of surveyors decked out in their orange vests along the roadside viewing the land through what looks like a telescope. That telescope is actually a theodolite, a tool used to measure angles that is not exclusive to surveying crews. Since the 17th century, theodolites have been the primary tool […]



How to Read a Civil Scale Ruler

As engineers are designing roads, topographical structures and water mains, they use scales (size reduction) to transfer the design concept to a manageable size set of drawings that provide two- or three-dimensional representation of the project. Civil or engineer rulers (scales) refer to the tools that engineers and plan reviewers use to measure these projects […]



How to Read Quad Music

When drummers first begin performing in a marching band, many decide to play the quads (also known as the Multiple Tom-Toms). Quads can be a challenging and stimulating way to participate in a drum line, but you will be exposed to a new type of written music if your experience has been limited to drum […]



How to Read Tatting Abbreviations

Here’s the key to reading the abbreviations used in a tatting pattern. Recognize the basics: r(s) = ring(s); ch(s) = chain(s); p(s) = picot(s). Picots can be: sm p = small picot; lg p = large picot; or designated by just a – (dash) = picot. Learn the verbs: j = join; cl = close; […]



How to Read Music Notes for Snare Drum

A snare drum is one that’s usually small in size. It’s often used in a marching band for a drummer to carry at his side. It’s called a snare drum because it has snares that line the lower head, and they reverberate for sound effect. Reading musical notes is something that one should ideally understand […]



How to Read a Scuba Tank

Familiarization with equipment and establishing a regular maintenance routine are habits that ensure a diver’s safety. The scuba or air tank is no exception, and each scuba tank should be visually inspected every two years and complete hydrostatic testing every five to ensure the interior and exterior of the tank are sound enough to support […]



How to Read Concrete Construction Plans

Construction plans consist of graphic descriptions and written specifications for construction projects. Specifications describe the performance standard and quality of materials; there are also several sections about concrete form, place and finish. Reading construction plans takes practice and requires familiarity with graphic symbols and line weights for drafting. Read written specifications carefully as well; if […]



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 a Height Gauge

Height gauges are primarily used in workshops and factories to measure the depth of a feature or to measure a distance with accuracy. According to “Quality Digest Magazine,” all height gauges consist of a base, vertical shaft, a measuring unit that travels up and down along the shaft, and an arm protruding from the measuring […]



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 […]



High School Reading List of British Authors

The influence of British authors on American culture is undeniable. Some predate the country by centuries, paving the way for and influencing contemporary American men and women of letters. A smattering of British authors made their way onto the high school reading list for the Common Core Standards, adopted in most states as of 2014. […]



How to Read an Oral Thermometer

Taking temperatures using an oral (mouth) thermometer is not difficult, especially if you using a digital thermometer. Make sure the tip of the thermometer is wiped clean with an alcohol wipe to sterilize it. Depending on what type of digital thermometer you use, there should be a little button on the top that you touch […]



How to: Share Books Between Kindle Accounts

When you find a great read, it’s hard not to want to share the experience with friends and family. Use Kindle’s Households and Family Library option to connect your Kindle account to other accounts in your home. Some Kindle e-books have an option to loan your copy of an e-book to someone else for up […]



How to Take an Accurate GPS Reading Using a GPS Receiver

Scientists have enhanced the Global Positioning Systems (GPS) capabilities immensely since the first GPS satellite was launched for military surveillance purposes in 1968. Today GPS devices exist for a variety of purposes from driving directions to pinpointing your coordinates as you’re hiking. Taking a specific GPS reading can be especially important if you are charting […]



How to Read Weather Radar

Weather radar, also referred to as Doppler radar, is a useful tool in forecasting weather. It is also useful to the typical person because it can let them know if and when bad weather will affect them. Forecasters use radar to determine when to issue weather watches and warnings, and storm chasers use it to […]



How to Read the Body Language of Customers

Body language may be categorized into two types: positive signals and negative signals. Positive body language includes smiling, nodding and making good eye contact. Negative body language includes yawning, frowning, making no eye contact and displaying a lack of attention. Facial expressions (apart from gestures and body movements) are the keys to finding out what […]



How to Read Bus Maps

Bus lines can seem confusing at first. What route goes where? What times do they come by each stop on the route? Fortunately, this is where bus maps come in. A bus map provides an outline of all the stops along a route, along with a timetable showing when it will stop at each location. […]



How to Read a Novel Fast

Reading novels can sometimes take a long time. However, if you find you are in a crunch before that next book club meeting or need to buzz through a novel before your literature exam, learning to speed read novels can have some benefits. Keep in mind that speed reading isn’t usually much fun, but with […]