2.1511 That is how a picture is attached to reality; it reaches right out
to it.


2.1512 It is laid against reality like a measure.


2.15121 Only the end-points of the graduating lines actually touch the
object that is to be measured.


2.1514 So a picture, conceived in this way, also includes the pictorial
relationship, which makes it into a picture.


2.1515 These correlations are, as it were, the feelers of the picture's
elements, with which the picture touches reality.


2.16 If a fact is to be a picture, it must have something in common with
what it depicts.


2.161 There must be something identical in a picture and what it depicts,
to enable the one to be a picture of the other at all.


2.17 What a picture must have in common with reality, in order to be able
to depict it--correctly or incorrectly--in the way that it does, is its
pictorial form.