6/29/2023 0 Comments Measurements on a rulerAlthough the introduction of the flexible measuring tape reduced the popularity of hard rulers, these sturdy measuring tools are still frequently used by many designers, carpenter and handymen today. These rulers could extend to lengths of six feet or more while folding back up to a convenient carrying size when not in use. In 1851, Anton Ullrich, a German industrialist, invented the folding rule, which was formed by a series of six-inch rulers connected by pivoting hinges. Throughout their history, rulers of varied sizes and shapes have been produced from wood, ivory, copper and other metals. These simple yet essential tools have since been used for measuring dimensions, drawing lines and serving as a guide for cutting materials. And we're done.Wooden measuring tools are reported to have been used as early as 2650 B.C. And we see that this cookie tray is, it is right at about eight centimeters. This, starting the ruler too far to the right, you wanna put it right at the edge, right over there. Ruler too far to the left, and you don't wanna do And we see that it is, onceĪgain, we don't wanna do this, that would be starting the Measure along the top or along the bottom. So we wanna measure, so we wanna measure, let me make sure I don't lose my ruler. The length, if peopleĭon't tell you otherwise, it's the longest dimension. You don't wanna measure that side up there, that And so the longest dimension of a tray of cookies is gonna be They mean the longest, "length" actually means Of cookies in centimeters? Now when they say "length," Let's see, it looks pretty close to eight, eight meters right over here. Guard starts, so that's where your ruler should start, measuring one, two, three, four,įive, six, seven, eight, looks pretty close. To measure, before the garden even starts or you're starting to measure too late. Wanna do something like this, where you're starting Maria's back yard in meters? Drag the ruler to make the measurement. Wall right over here, it's right at four, right at four meters. And I see, okay, the length of the bank, well how much is that? Well you see this right Measuring right at the edge, right at the edge of the bank. This would be wrong, because I wanna start So I can click on this, and then I can put it, remember I wanna, I don't wanna do this, Those are big dollar bills,Īnd those are big coins. What is the length of theįloor of the bank, in meters? This is a picture of a bank. And we're going exactly to the right side. Here, you have no overlap,Īnd no gap right over here. So this one, you have a gap, and you're actually going beyond theĮdge of the rectangle. And you wanna get all the way to the edge of this rectangle. Measure the eraser and overlap." Oh, I see, this is kind of, the ruler's a little bit transparent, so this one is overlapping with the one underneath. Isn't even getting to the entire length of this rectangle. Which shows the length of theĮraser measured correctly? So, this one, well onceĪgain, there's some weirdness over here, I don'tĮven know what's happening. The rulers in any way to get to this side. The way, without any gaps, and without overlapping Left side, which they did, but you need to go all Not going all the way, the entire length of the rectangle, so this, you're coming up short. So this isn't a good way of measuring it. And you notice that this ends to the right of the right of the rectangle. And you can't leave a gap here, you wanna measure what this distance is. You have one centimeter and then another centimeter,īut you're leaving a gap right over here. Sure that the other two don't really measure Side, to the right side, "then we know that this is going to be "two centimeters long." One, and two. Middle, is one centimeter, "and then it's another centimeter that "gets us to the other Here, from the beginning "of the rectangle to the And they say, "Two rulers "measure the rectangle side-to-side." Well this makes sense, 'cause we can say, "Look, if from here to So here, we have this green rectangle, and, let's see, how did we measure it? We have one centimeter, right over here, and then we put anotherĬentimeter right over here. The length of the rectangle measured correctly? Alright.
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