I have not shown the machining of the remaining parts as they are basic operations. For each rest two hinge links are required, which are held by coach bolts, star anti slip washers prevent rotation when clamped. Screwed handles are turned on the lathe. The brass clamping handles, and sliding steel strips for the protractor were made up.
A steel plate was made to slot around the abrasive wheel, and prevent wear on the aluminium table, which is held by two c'sink screws.
The final pic. shows a round nose tool being ground, which can be rotated in one continuous sweep.
Cheers David