Keuffel & Esser 4161-1 5″ Plastic Polyphase Mannheim Improved CursorKeuffel & Esser 4161-1 5″ Plastic Polyphase Mannheim – 40220No CursorKeuffel & Esser 4161-1 5″ Plastic Polyphase Mannheim – 024555See Also:9061-1 (4161-1) 5″ Plastic Polyphase Mannheim68 1586 (4161-1) 5″ Modern Polyphase (Jet Math)