Does any one know anything about scale?, please need help!!!!?

Hi:

First off let start by explain what a scale is a Scale is a ratio of two sizes . It is way to put something that is too big or too small in the real world to a size that we humans can relate to for example Let say a Saturn V rocket is 309 feet tall to make a 1/12 scale model of it. first we know the real rocket is 309 feet. on our model scale 1inch equal 12 inches or 1 foot so:

309/12 = 25.75 or 25 and 3/4 inches

our scale model of the Saturn V rocket is 25.75 inches or slightly larger then 2 feet tall (actually 2 feet 1 3/4 inches tall)

Somethings are too small in the real world ( like pocket watch gears or electronic parts) So we use a enlarging scale and it written like this 4/ 1 or 1 inch equals 4 inches for example a gear is 1/8" in diameter in the real world would be drawn on a blueprint drawing with the scale 4 to 1 the gear is drawn at 1/2 inch diameter or 4 times it's actual size

1/8 * 4/1 = 4/8= 1/2 inches

the way to remember a scale is what place is the 1 units in relation to the scaling value or division sign or " :" symbol if the 1 is in front of the division sign or ":" symbol your dealing with a reduction factor with means that the model or drawing is going to be smaller than the actual object itself

If the 1 unit is in back of the division or ":" symbol with number greater than 1 in the front your deal with a enlarging factor meaning the drawing is bigger the the actual size of the object itself

Okay let's see what the answer is, for your problem:

let say your measuring a real rod that is 4.7 mm and your scale on a drawing of this rod is 2.5 :1 what is the drawing scale lenght of this rod is:

rule 1: where is the 1 in relation to the scale value?

answer: behind it. So we are dealing with a enlargement drawing

So set the problem as follows:

4.7 *2.5 = 11.75 mm

The drawing scale measured rod lenght is 11.75 mm or the rod lenght on the drawing is 11.75 mm

the scale is 2.5 : 1, which is the same as saying 2.5 x 4.06.

basically, you are working with an enlarged scale...an inch equals 2.5 in. for example.

ok I'm not sure what your asking but scale is just a way of relating the sizes of things. for model cars for exampe most are in a 1/24 scale meaning for 1 inch on the model there is 24 inches on the car.

4.06 on a scale of 2.5:1 is: 10.15 mm

girl, I rate u a 7. Don't let them tell you you're a 4.06

What in the world are you trying to ask?

you shoudl look it up on google i did that with my maths and i got it right!

i know a lot but i wont tell