A thing. For Carl.

 

Comments

Carl Weese said…
Ah, that certainly looks like a lock.
Martina said…
:-)
Like I said - I really don't have an idea. Something like a water level gauge perhaps? With the help of perspective one might gauge the water level from the control building?
Martina said…
More or less like I used perspective to gauge .. whatever .. in the other photo :-D