The Allen Engineering Scales are designed specially for use on oil maps in posting wells and tracts of land etc... It enables the draftsman or land man to scale off each unit directly, without the use of a conversion table or calculating machine. Sold only in complete sets. Never Individual leaves. Only 16.50$, free shiping!
		The Allen Miscellaneous Scales are designed specially for use on maps drawn to a proportional scale such as 1:1000, 1:250,000 etc. Government agencies use this system in drawing quadrangle sheets, aeronautical charts etc. Sold only in complete sets. Never Individual leaves. Only 16.50$, free shiping!
		The Allen Engineering Well Poster is designed to enable draftsmen to post wells on maps drawn to the scales. They are printed on flexible opaque white plastic and laminated with clear vinylite to eliminate friction wear on graduations and numbers. Only 4.25$, free shiping!