how do you read a meniscus


How to Read a 275-Gallon Heating Oil Tank Gauge

One of the most common sizes of home heating oil tanks is 275 gallons. These are typically the oval tanks with two flat ends, standing on four short steel legs. Knowing how much oil is in the tank assures you have a steady source of heat during the cold winter months. A mechanical float-style gauge […]



How to Read a Reverse Mortgage Statement

Reverse mortgages, available to homeowners 62 and older who have equity in their home, allow homeowners to get cash from that equity without selling their home — and without making monthly payments as long as the homeowners are still using the home as their principal residence. It works similarly to taking out a line of […]



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 Boat Hull Identification Numbers

Since November 1, 1972, all boats must have a 12-character hull identification number (HIN). These numbers are required by federal law and help the manufacturer identify the owners of their boats in case of recall or a defect notification. A change was made August 1, 1984, mostly regarding placement of the number. Due to the […]



How to Read Measurements on an mL Syringe

Most syringes used for injections or to precisely measure oral medication are calibrated in milliliters (mL), also known as cc (cubic centimeters) as this is the standard unit for medication. The most frequently used syringe is the 3 mL syringe, but syringes as small as 0.5 mL and as large as 50 mL are also […]



Difficulties Adjusting to Reading Glasses

Getting reading glasses can be exciting but it can also cause some difficulties. There are some common symptoms people experience when adjusting to new glasses. For other, the symptoms are more severe. Knowing what will happen and what should not happen, will help you adjust to the glasses and know when to return to the […]



How to Read Baseball Signals

Some baseball signs are obvious, such as an umpire’s safe and out signs or the third base coach’s arms waving wildly in a circle telling the base runner to make a run for home plate. Other signs are not as clear. Paul Dickson, author of "The Hidden Language of Baseball," estimates that in any given […]



How to Read an R134A Air Conditioning Gauge

R-134a is the refrigerant used in the majority of cars manufactured after 1993. Over time the refrigerant, also known as freon, can become low. When the freon is low the air conditioning system will not cool as quickly or even at all. Testing the air conditioning system with a R-134a gauge will help you quickly […]



How to Read an Engineering Ruler

An engineering ruler is a straight edge designed to measure objects on a construction plan to scale. The engineering ruler has six different scales printed on its prongs; each scale represents a different conversion factor. The small, two-digit number printed on the far-left edge of each number line indicates the number of feet represented in […]



How to Read a Standard Slide Vernier Caliper

Slide vernier calipers are typically used to measure objects which cannot be measured using a standard ruler or tape measure. It is also used when an additional digit of accuracy is desired, which a standard ruler can not provide. Learning to read a slide vernier caliper takes practice, since it must be read differently than […]



How to Read a Hygrometer

Hygrometers measure the humidity of the surrounding air, and have various related applications including weather forecasting and air conditioning. While there are new, easy-to-read hygrometers available, the classic double-thermometer hygrometers are still in use and can reveal a great deal about what constitutes humidity and how it is determined. Identify the wet bulb and dry […]



Foods to Increase Reading Comprehension or Memory

Reading comprehension can be defined as understanding fully the context and meaning of sentences and written works. Many aspects of reading comprehension involve healthy oral, cognitive and auditory skills. Another related, but independent, variable is memory. Memory helps augment a person’s reading comprehension skills. To increase both reading comprehension and memory, there are certain foods […]



How to Read GPS Coordinates

How to Read GPS Coordinates. The 27 (24 active and 3 backups) satellites making up the GPS network over earth send microwave signals at light speed to communicate positions. For years, the military has used GPS coordinates to locate people, targets, set navigation and establish meeting places. Today, people use GPS for hiking, driving, SCUBA […]



How to Read an Electrical Meter

Many homeowners trust the electric company to read their meter every month in order to bill properly. Understanding how to read your own meter, however, not only ensures that you can verify the electric company’s reading but that you can monitor your daily, weekly or monthly electricity usage. Monitoring your electricity usage is critical if […]



How to Improve College Reading Skills

When they start college students often feel overwhelmed by the amount of reading they are expected to do¡ªand many stay that way throughout their college career. That¡¯s unfortunate because there are methods to improve college reading skills that make it easier and faster to handle the load. If you want to improve college reading g […]



How to Improve College Reading Skills in 10 Steps

Have you ever sat and read the same sentence in a textbook over and over without getting anything from it? Now that you’re in college, the information you get from reading textbooks is often necessary for your success on tests. That’s why knowing how to approach reading for college is important. The following steps will […]