Check the listing for details. SWIFT & ANDERSON BOSTON MASS: S&A HAND SIGHTING LEVEL C 1949 REF: 3512N. Condition: Used. Listed at 54.00 USD. S & A HAND SIGHTING LEVEL. " An accurate pocket size level, the design of which enables the user to do the job alone if necessary. This hand sighting tool projects a level line of sight and is indespensable for laying out drains, ditches, foundations, gardens; for contour plowing and soil erosion work; in short wherever grades must be established, or a level line is necessary over an appreciable distance.