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How To Read A Tape Measure and figure fractions, Measurement and measuring - YouTube
Channel: Scott C. Parker
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here we have a standard 25-foot tape
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measure at the end of the tape measure we have
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a little hook as we extend the tape out
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of the tape measure we see that we have
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standard numbers starting at, well, the
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end would be zero we have one inch two
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inches three inches and so on when we
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extend out up to a foot twelve
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inches we see that we have a second set
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of numbers show up we have 12 inches
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which is also a foot and we have
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thirteen inches and then we also have a
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one inch so 12 inches 13 inches or, one
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foot, one inch that continues on to be
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one foot two inches or fourteen inches
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depends on what nomenclature you're
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going to be using feet and inches or
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just inches the entire tape measure
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continues as we'll see when we get to
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two feet we have two feet or 24 inches
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to foot one inch and so on so we can find
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these measurements quickly now what I'd
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like to do is let's cover what's in
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between these full inch marks to make it
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easy I'm going to go up to 20 inches so
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that we're dealing with a 0 and a 1 inch
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so 0 inches and 1 inch in between the 0
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and the 1 we have several divisions the
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largest of them is to divide it in half
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between 0 & 1 we have 2 halves so be 1/2
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and then a whole and it's about it in
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two segments and we're getting into
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fractions here which is a whole other
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area that we're going to explore tape
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measures are a wonderful tool to learn
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fractions
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so from 0, 1/2 to 1 we're dividing it
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into 2 which ends up being 1 slash 2 (1/2) half an
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inch
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if we divide it into fourths to four
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divisions let's say we divide this into
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half so that is this is two divisions
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this is our quarter line right there
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we have half and half of that again is a
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quarter. we're going to add one quarter of
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an inch
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and there are four quarters to the hole
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just like there are four quarters to a
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dollar. We have zero, half, full. We have
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zero 1/4 2/4 3/4 and the hole is there
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four quarters here's one quarter is
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another quarter another quarter and now
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that we have our 1/4 and 0 to one
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quarter if we cut this in half
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this is 1/8 line this is 1/8 there are
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eight segments this size within our inch
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1/8 two eighths which is also quarter
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3/8 4/8 which is 1/2 5/8 6/8
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which is 3/4 7/8 and then eight eighths
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since the 1 inch is divided into eight
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sections one two three four five six
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seven eight get into the smallest mark
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on our inch is 1/16 between the eighth
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and zero is 1/16 and there are sixteen
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separate lines one two three four five
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six seven eight nine 10 11 12 13 14 15
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16
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so each one of these lines each one of
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these spaces is in sixteenth of an inch
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at the shortest line you'll notice that
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this largest line is half an inch then
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quarter then 1/8 then 1/16
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(The audio had an oops. I reversed 1/8 & 1/16 by mistake. Fixed here in text.)
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you might be asking why we don't do this
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at the zero at the very end of the tape
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measure we can run into some
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inaccuracies as you can see this one has
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a little bit of wear and tear and when
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you're using a tape measure at the very
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end we have our one inch we go backwards
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to half an inch and we have zero but
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looking at this device here you'll see
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that it moves and it could be considered
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loose it's actually designed to do this
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the reason why it's designed to do that
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is that when you're measuring an object
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that you push the tape measure up
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against we want this to extend in when
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you're measuring an object that you'd
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like to hook off the end let's say the
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length of a piece of wood you look over
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and you'll see that the end moves so if
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we're pushing in the end moves in and if
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you're pulling on pieces on the end of a
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piece of wood it pulls out the reason
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why you want this to happen is to
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account for the thickness of this piece
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of metal itself if you think about it if
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it didn't move then if we measured on
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the inside it might be accurate but if
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we then measure on the outside and it
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we're not to move it would not be
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accurate because of this thickness of
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this piece of metal so we actually want
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this to move ever so slightly
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