Overhauls

Optical alignment equipment mounted on the WD cylinder to establish true axis of bore.

Optical alignment equipment mounted on the WD cylinder to establish true axis of bore.

Optical alignment used to establish a true base line.  From this the the horn guides can be checked for square using either an optical square attachment or by self reflection methods.

The advantage of optics is that there is no piano wire to obstruct operations and direct readings of squareness and lateral positions are easily obtained.