Ross Rapid Symmetrical Lens
1875-1885
Beck Symmetrical Lens.
circa 1910
brass mounted Rapid Symmetrical lens
circa 1900
Symmetrical lens
circa 1880
brass mounted symmetrical lens
circa 1895
Brass-Mounted Rectigraph Symmetrical Lens
circa 1885
Ross Rapid Symmetrical Lens
circa 1910
Symmetrical lens with Waterhouse stops
circa 1880
Brass Mounted Symmetrical Lens
Brass Mounted Symmetrical Lens
circa 1890
Brass Mounted Wide Angle Symmetrical Lens
circa 1890
symmetrical lens
circa 1880
symmetrical lens
circa 1905
A Symmetrical Lens.
circa 1900
brass mounted wide angle symmetrical lens F.16 7 inch f.l
circa 1890
Brass mounted symmetrical lens F.8 11 inch f.l with a ring iris diaphragm
1905-1915
Brass Mounted Symmetrical Lens
circa 1870
symmetrical lens
circa 1890
Symmetrical Lens F.6 6.5" f.l.
circa 1910
Symmetrical Projection Lens 5.5" f.l.
Symmetrical lens F.8 11" f.l.
circa 1890
brass mounted symmetrical wide angle lens F.16 8.5inch f.l. ring diaphragm. Wray
circa 1910
Ross Brass Mounted Rapid Symmetrical Lens
circa 1900
Symmetrical Lens No.6
circa 1880
Brass Mounted Symmetrical Lens
circa 1880
Ross Symmetrical Lens F.16 7" f.l.
circa 1890
Symmetrical Lens F.8 8" f.l.
circa 1910
Brass Mounted Symmetrical Lens
c. 1890
Symmetrical Lens.
circa 1860
Ross Symmetrical Lens
No.1 symmetrical wide-angle lens F.11 3 inch f.l. with Wheel stops. Ross
circa 1900
Symmetrical Lens.
circa 1870
Beck Symmetrical Lens
Beck Symmetrical Lens
1900-1910