Simplified sketch of a house from Federsen Wierde, scale: 1m = ca. 4 Pixel
<a href="//commons.wikimedia.org/wiki/User:T.woelk" title="User:T.woelk">t.woelk</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span> (drawn by myself)