115 volts; utilize spherical projection to provide direct registration of absolute target brightness of 31.5 asb and sphere luminosity of 1000 asb on a 30 cm radius projection hemisphere surface; spring-balanced, center posted table, with precise balance for instrument weight; contains a telescope with magnification not less than 1.85x; adjustable target size of 64, 16, 4, 1/4 and 1/16 sq mm with three built-in gray filters having relative light intensity levels ranged from 0.0315 to 1.00; three filter caps attachment with red, green and blue color each; chin adjustment range: vertically-in excess of 50 mm laterally-in excess of 80 mm
No other part numbers with same form, fit, and function found.
An apparatus for determining the extent of the peripheral visual field on a curved surface.
Classification: Other ophthalmic instruments and appliances and parts and accessories
NSN 4140-01-207-0452
NSN 6320-01-201-2776
NSN 5999-01-382-0174
NSN 5835-01-373-9506
NSN 6645-00-450-2209
NSN 6620-00-051-7666
NSN 5855-01-417-5571
NSN 5835-00-104-8944
NSN 5945-01-013-2794
NSN 6105-01-255-6980
NSN 5965-01-262-3513
NSN 5990-00-019-2486