Identifying Parts Used For The Escape Hatch of Sariel's Tiger XL Model I am working on a similar model of Sariel's Tiger XL in prep for my own designs of a few other German WW2 tanks, and need some help identifying a part or two.

Does anyone know what are the two parts on the left image that stand in for the escape hatch? One looks like a spanner, and the other one behind it is circular.
First three from what we can see... 




Part: 4735 Bar 1 x 3 with Clip and Stud Receptacle (Robot Arm).





Part 2958 Technic, Disk 3 x 3.





Part: 75c03 Hose, Rigid 3mm D. 3L / 2.4cm.


Last two hidden from view...


4 &amp; 5. Part: 4085d Plate, Modified 1 x 1 with Clip Vertical - Type 4
    (thick open O clip).

I can't see, but I can imagine two crossed vertical 1x1 clip plates, pierced by the flex tubing to hold up the robot arm.  

Sing! Now, build it out.  Now, build it out.  Now, build it out...