2.1511
Thus the picture is linked with reality; it reaches up to it.
2.1512
It is like a scale applied to reality.
2.15121
Only the outermost points of the dividing lines touch the object to be measured.
2.1513
According to this view the representing relation which makes it a picture, also belongs to the picture.
2.1514
The representing relation consists of the coordinations of the elements of the picture and the things.
2.1515
These coordinations are as it were the feelers of its elements with which the picture touches reality.
2.16
In order to be a picture a fact must have something in common with what it pictures.
2.161
In the picture and the pictured there must be something identical in order that the one can be a picture of the other at all.
2.17
What the picture must have in common with reality in order to be able to represent it after its manner—rightly or falsely—is its form of representation.
2.171
The picture can represent every reality whose form it has.
The spatial picture, everything spatial, the coloured, everything coloured, etc.
2.172
The picture, however, cannot represent its form of representation; it shows it forth.
2.173
The picture represents its object from without (its standpoint is its form of representation), therefore the picture represents its object rightly or falsely.