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 6220-00-456-2911
NSN 5996-00-553-7348
NSN 5950-01-243-3460
NSN 5915-01-424-0767
NSN 5835-00-827-1904
NSN 6145-01-197-1619
NSN 5915-01-346-7181
NSN 5950-01-435-4405
NSN 5960-01-563-0020
NSN 5915-00-349-2198
NSN 6685-01-142-4224
NSN 5925-01-472-7344