What does 1 2

Reproduction scale

The image scale is defined as the ratio between the size of an image of an object and its real size. It consists of two numbers, at least one of which has the value 1, separated by a colon. The first number describes the size of the picture, the second number describes the real size of the object. A distinction is made between three types of reproduction scales: A reproduction ratio of 1: 1 indicates that the object and its image are of the same size. An image scale of 1: 2 means that the object is twice as large as its image (reduction scale). An image ratio of 2: 1 means that the image is twice as large as the object (magnification).

Scaling down

Is If the number after the colon is greater than 1, the original has been reduced in size (the image is smaller than the original). One therefore speaks of a scaling down. A scale of 1: 5000 (i.e. 1 to 5000) means: Each measured length is in reality 5000 times as long.

Let's take the height of the Eiffel Tower in Paris in the capital of France as an example. So that you can still read the dimensions properly, the drawing has been reduced to a scale of 1: 5000. The original is therefore larger than the image. Each measured length on this figure is actually 5000 times larger. If you measure a height of 6.5 cm in this figure, this height is actually 325 m (6.5 cm x 5000 = 32,500 cm = 325 m).

Magnification

Is If the number in front of the colon is greater than 1, the original was shown enlarged (the image is larger than the original). One speaks therefore of a magnification scale. A scale of 7: 1 (i.e. 7 to 1) means: Each measured length is actually 7 times smaller.

Let's take the height of a wood ant as an example. So that you can still read the dimensions properly, the drawing is enlarged to a scale of 7: 1. The original is therefore smaller than the image. Each measured length on this figure is actually 7 times smaller. If you measure a length of 42 mm in this illustration, this length is actually only 6 mm (42 mm: 7 = 6 mm).

The image scale is defined as the ratio between the size of the image of an object and its real size.