RK,
Some variations of artillery rear and front sights are screw adjustable for fine adjustments to windage and elevation in addition to the standard slide on the rear sight and the standard dovetail on the front...
Do a search on the old board and there may be some photographs still available that show these screws and the types of tools used to adjust them. If no one posts a photo showing an artillery sight adjustment tool by Monday, I will try to remember to post one when I get to the office. That is where I have my Photo archive on CD.
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regards, -John S
"...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..."
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