"115 V,AC OR DC,50 OR 60 HZ,CONSISTS OF A HOUSING,PIVOTALLY SUPPORTED IN A FRAME,AN OBSERVATION GLASS,A 40 WATT LAMP,ON-OFF SWITCH,A 3 WIRE ELECTRICAL CORD W/A 3 PRONG RUBBER OR THERMOPLASTIC PLUG,8 SLIDES ACCOMMODATED ON OBSERVATION GLASS; FOR REPLACEMENT LAMP,ORDER NSN 6240-00-504-2526,LAMP REQUISITIONED IN ACCORDANCE WITH APPROPRIATE MILITARY SERVICE MANAGEMENT DATA LISTS"