The Versalab Parallel is one such laser device. I use one to quickly check my Omega E6 (5x7) occasionally. It's very convenient to use, but it's only totally effective if your enlarger has all the appropriate adjustments available. If you find the column requires shimming (very time consuming operation) I'd opt to use metal shimming for a more permanent fix, as paper would tend to settle over time. However, using paper can indicate exactly where the shims needs to be placed. We're likely talking about shimming in fractions of a millimeter.
Originally Posted by tkamiya
Last edited by silveror0; 07-09-2013 at 06:38 PM. Click to view previous post history.