How to assemble the viscometer of Domino A120 inkjet printer?

You can first attach this white connector to the glass tube:

Then put the glass tube into the viscometer's housing like this:

Then put the steel ball in.

Then install it:

Be sure to get stuck at both connectors:

Install them:

Then install the screw cap, tighten a little, do not use too much force, otherwise the bottom edge is easy to crack:

If it is the first time to dismantle, pay attention to, it itself is coated with a layer of glue, if you use a lot of force, it will crack:

Once the viscometer is assembled, plug it in like this: