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Thursday, February 25, 2010 10:59 PM
Measurement of Length and Area, group 6 (;
♥Length and Area! (;
hello you there! we are the group six people. We have our group leader Elizebeth, and the other four members Jiaxin, Valerie, Rachel and Cherinalek! and.. we are going to bring you to a journey of LENGTH AND AREA. We are going to do 5 things on length and one thing on area. The 5 things are the vernier calipers, internal calipers, external calipers, measuring tape and ruler and the one thing on area is the square grid. We are excited, are you? (; alright, then let's go!
and now.. welcoming the.. inside measuringtape. joking, its the INTERNAL CALIPERS. hahaha.
okay.. INTERNAL CALIPERS.
 
The internal caliper works like the external caliper.The internal caliper is the reverse of the external caliper meaning the contact measuring points are turned out instead of in. So, the internal calipers has a totally different jaw as the external calipers.We use the internal calipers for meausing the places that a metre rule isn't able to measure. For instance, we want to find out the circumference of the beaker, so we place the internal calipers at slightly the tip of the beaker and extend the jaws of the internal calipers then use a metre rule to measure how wide the jaws are and there, you got an answer! (;
EXTERNAL CALIPERS.
How to use a external caliper? The external caliper is designed specially for taking external dimensions.The instrument must be closed on the part throughly, but not forced.In general, the part should be stationary. Once the sliding jaw and fixed jaw contact the part, tighten the screw on the top of the fine adjustment. Only when you begin to move the sliding jaw toward the part with the fine adjustment screw while simultaneously making sure to align the instrument so that the flat of the jaws is completely contacting the part squarely. Once the jaw will no longer move forward with modest pressure from the adjusting screw,p and take the reading.
THE RULER
How to use a ruler??
Rulers are thin slats marked out in English or Metric units of measure. In the US they are one foot foot in length. Ruler comes in wide variety of lengths.It is used
to make measurements like length, width and height. a measuring stick or a king.
VERINER CALIPERS
They are digital caliper, micrometer caliper and the divider caliper. These are the different types of venier caliper. We normally use it to measure things that are unabled to be measured by the normal ruler, Here are the steps on how to use a venier caliper. First, put your workpiece inbetween the jaws of the vernier calipers then close the jaws and make sure the 0 of the main scale is in the same line as the 0 in the vernier scale avoding zero error to occur. Then, look at the measurement of the vernier scale and the main scale and then add them together to find your answer of the measurement of the workpiece!
Area. We are now proceeding to Area now. we are doing on the SQUARE GRID for area.
SQUARE GRID.
What is a square grid?
Square grid is used to measure irregular figures. For example a leaf. We can't measure a leaf with a ruler but we can use a square grid. How the square grid works: First, draw the shape of the object on the square grid. Make sure the object u drew follows the same measurments of the original object. Then, tick the boxes with has more than half a sqaure shaded. Next, calculate one of the boxes area. For example, the length of the square is 1cm. so the area of one box is 1cm x 1cm equals 1cm. After that, take the number of ticks and times(x) the area of one sqaure box and taaaaadaa, you got your answer. (;
MISSION ACCOMPLISHED!
okay, we have another 30 slides of measurements for you on mirscosoft! joking.. hahaha. anyway, we hope you got a rough idea of length and area. alright, BYE! God bless (;
pictures were taken from goooooogle.
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Yours truly,
With Loves,
Scream Love,
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