Mid hinged Tilting CCTV pole / pen

I had to do a systems inspection of a railway maintenance yard and thought the tilting CCTV poles would look funny as a pen. 

I work in security and I was approved to be there and take the photo's. Please don't go wandering through railway locations without the correct training, PPE and approvals to be there.

I took the insides from a free pen to add to the print.

Note the pen would normally tilt down to the ground for maintenance purposes (so you don't have to climb a ladder). However, I restricted the tilt of my pole, to make the hinge mechanism easy to print in one hit and allow the pen to be removed easily. I realise there's a hundred different ways of doing the hinge - I found this way easiest for me to print and to use.