Fitting a Citroën Xantia rear suspension cylinder to BX.
002-IMG_2378.JPG.medium.jpeg
..and the union is machined to 15,7 mm outer dimension in order to match the BX one.

Exposure time 1/30 sec.
Aperture value f/2.0
Focal length 6.0 mm
Camera model Canon   Canon PowerShot S90