IES Ro CabeIES Ro Cabe2 ESO2 ESOTECHNOLOGYTECHNOLOGY

ESCALA

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We often design objects that are biggerbigger or smallersmaller than the

paper we draw on

ScalingScaling means drawing the object bigger or smaller than it really is.

The scale indicates the number of times that we reduce or increase the object.

SCALESCALE =DRAWINGDRAWING

REAL REAL ObjectObject

ESCALAESCALA = DIBUJODIBUJOOBJETO REALOBJETO REAL

La escala indica el numero de veces que reducimos o aumentamos el objeto

Types of scalesTypes of scales

Full ScaleFull Scale Escala Natural

Scale downScale down Escala de reduccin

Scale upScale up Escala de ampliacin

Full ScaleFull Scale Escala Natural

DrawingDrawing Real ObjectReal Objectsame size

ExamplesExamples

Full scale is expressed as Full scale is expressed as

Scale downScale down Escala de reduccin

DrawingDrawing Real ObjectReal ObjectSmaller

We indicate We indicate scale down:scale down:

When object is too large to fit on the paper.When object is too large to fit on the paper.

Letter ELetter E

Number 1Number 1 ColonColon

Number Number greater than 1greater than 1

We divide all the dimensions of the real object by the number of the scale

Dividimos todas las medidas del objeto por el nmero que indica la escala

ExamplesExamples

we divide by twowe divide by two

drawing is half the size of the real object

Hammer

drawing is tenth of the size of the real object

we divide by tenwe divide by ten

Door

Scale upScale up Escala de ampliacin

DrawingDrawing Real ObjectReal ObjectBigger than

We indicate We indicate scale up:scale up:

When object is When object is too small to see it in detail..

Letter ELetter ENumber 1Number 1

ColonColonNumber Number

greater than 1greater than 1

We multiply all the dimensions of the real object by the number of the scale

ExamplesExamples

we multiply by twowe multiply by two drawing is twice

the size of the real object TIPEX

we multiply by tenwe multiply by ten

Nut drawing is ten times as big as the real object

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