26x magnification with quality Japanese optics Rugged "all metal" construction Horizontal circle with dual verniers reads to 20" Convenient optical plummet eliminates the need for plumb bob Built-in tubular compass never gets lost Sturdy metal case The BC-8 transit, by Japanese manufacturer World Sokki, is essentially the same instrument sold by Gurley as the G-15, and by Schneider/Nikon as the TT-700. It is a fine performer that would be excellent for construction applications of all types, and for many basic survey projects. This particular unit was probably made in the early 80s, and is in very nice cosmetic and excellent operating condition. The finish is clean. showing little wear, and even the case is in nice shape!