| A holder for the cutoff half of the tube was fixed to the x-y table. | 
|
| The tube is held on either end by small squares that fit into slots in the bottom plate. The squares can be rotated by n×90° so that images can be taken at the same location on all sides of the tube, maintaining registration. | 
|
| Looking at the site of the pinhole, from outside | 
|
| Same location, from the inside of the tube. | 
|
Hubert Van Hecke Last modified: Sun Jan 27 23:05:39 EST 2013