 # Measuring with a plain ruler and marking fractions Learning how to properly use a ruler is the basis for just about everything involved with laying out a stage, scenery, lighting, etc. This video shows how to use a standard 12 inch ruler and mark out the fractions down to the 32nds of an inch. This is a copy of the computer generated transcript. It’s not been corrected yet.

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Here we have a standard inch ruler. It’s a 12 inch ruler. And we’re going to look on how it works. Here we have zero the zero market, a one in tomate and a two inch mark, three, four, five, six and so on, the two line and the three line and a four line and one line, the whole numbers are the longest rule or lines. Here is lines. The next length divide these two directly in 1/2″.

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So this is referred to as the 1/2″ mark. So if we have a whole line here. And here. And this is going to be the 1″ 1/2″ mark. Halfway, it doesn’t matter where they are, they could be between these guys and this line here is still going to be the halfway line. So we’ve got on this case two and a half inches, three inches, three and a half inches. Four inches. And one inch and zero, obviously, between the hole number and the 1/2″ number, if we divide that in half again, let’s say we take 1″ 1/2″ and we divide that in half, divided by two equals one quarter.

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There are two quarters and a half, just like there are two quarters and half a dollar. So. In between here, this is a quarter line and you’ll see that these are a little bit shorter than the half inch line, so we’ve got one quarter and then two quarters because 1/2″ is two quarters.

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Here’s three quarters and the hole would be four quarters. So here we have one quarter. Here we have two quarters. Here we have three quarters. And then here we have four quarters. Which, of course, makes a whole let’s move over here a little closer and look at the lines between the four and the five, so there’s a whole numbers.

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We already know we have a 1/2″ there and we’ve got two quarters here. In between those, we’ve got these even smaller lines, so here’s the 1/2″ is the longest quarter and this one year between the the quarter, that’s an eighth because there are eight parts in between here, just like in the quarters. We had one, two, three, four quarters. Here we have one, two, three, four, five, six, seven, eight.

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Eight eighths. So this one here is one eight. And then we have a quarter, which could also be two AIDS. Than we have here. Three eighths. And when my handwriting gets sloppy. Here we have four days for the 1/2″, so for. Athos. Here we have five eighths. And six eighths. Which is also. Three quarters. And then here we have seven eighths. And then, of course, down here, we have the.

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Eight over eight, which, of course, equals one. So now we’re going to get even more detail. Let’s talk between the six and the seven. So we have the AIDS. In between, those are the sixteenths, because there are 16 of the tiniest lines here between the six and the seven. So we have 1″ 16. To then we have three, we read like this three over 1″ six. Four, five, six, seven, eight, nine, here’s nine sixteenths.

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I’m skipping them because they’re so small to write, but that’s nine sixteenths right there, which is just over the eight sixteenths. Which is just over to. Fourth’s. I skipped the AIDS. Forehead’s. For it’s. And 1″ 1/2″, I got confused there, I’ll catch up, so there’s nine, 16, 10, 11, 12, 13, 16. And so forth, until we get to, let’s say, 13, 14, 15, 16, 16.

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So all these numbers mean the same thing when you get to the eight, 16 to two over four two quarters for AIDS or 1″ 1/2″, those all mean the same things. But when you get in between them, when they’re an odd number, you have to use the whole thing. So when they’re odd numbers, you can’t reduce them. Whether even numbers you can. Now, let’s look at this other end of the scale, so here we are dealing with the 30 seconds.

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There are 32 little spaces between the zero and the one inch here. We have zero here, so they’re the beginning. Got the one inch over here. And of course, we have our half inch and we’ve got a quarter and a half an hour sixteenths, so these tiny little guys here are 30 seconds. So this is a 1″, 30 second 1″. Thirty two, and in here, the half inch 1″ would be eight, would be 16, 30 seconds.

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Thirty seconds. So if we want to measure let’s say we want to measure, let’s measure a line that is one inch and five, 30 seconds. Well, since there’s no 30 seconds over here, we’re not closer from zero to one. And then 30 seconds, we have to estimate we’re going to start from the two and go backwards. So from two to one, that’s one inch. So start here. And when I say five, 30 seconds, one, two, three, four, five, 30 seconds.

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So we want to go there. And draw a line. That is one inch plus the five, 30 seconds, if you want to add another five, 30 seconds, we can count one, two, three, four, five, which goes to right here. Which is 10, 30 seconds. So 10, 30 seconds if we divide 10. Thirty seconds and 1/2″, we’d end up with five. Sixteen’s. So if we look at this, we have one, two, three, four, five sixteenths, so that works out the same.

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So that’s how you use the 30 second marks within the front inch. Now, there are some laws that if you’re working with a ruler that has all of them because you’re doing a lot of precise work, you might have that. But this ruler here is a relatively generic ruler. So it’s only the first inch and that’s how you need to deal with it. So please like and subscribe and leave a comment down below. It helps us a lot in our outreach and let us know what else you’d like to learn.

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And we’ll see you next time. Thanks for watching.

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Bye bye.