7.15) Item 1, Sextant Assembly

Now we're on the home straight to completing the sextant. At last! This is what we're aiming for:-

There are very few parts to make now.

The shade pivots from silver steel:-

The four screws to attach the handle to the body:-

The stainless steel Horizon Mirror:-

The two brass legs:-

The pivot must be made carefully:-

Now the pivot nut:-

Finally, the assembly (note, you will need to remove the index mirror from the index arm before the pivot can be positioned). Yes, I know the blue ray diagram is incorrect, the upper ray should be at 60 degrees to the horizontal. It is pictorial, and I'll fix it one day..

And the rest

Final notes:-

You may find you need to machine up a spacer for the shades to stop them moving up and down their pivot shaft. Check when you assemble them, but before locking in the pivot shafts. The reason for this is that I'm not sure how thick your shade glass is going to be, so had to design in a bit of clearance for thicker glass.