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3M™ Overhead Projector 1800 Illustrated Parts Breakdown
© 3M 2004 4
Section 1. Inverted Head Assembly
Inverted Head Assembly Parts List
Item 3M Part Number Description Qty.
1 78-8120-8508-8 Inverted Singlet Head Module 1
2 78-8120-8509-6 Inverted Triplet Head Module 1
3 78-8120-8498-2 Inverted Mirror Module (Includes Mirror, Tape, and Holder) 1
4 78-8120-3158-7 Mount, Inverted Head 1
5 78-8120-3154-6 Yoke, Triplet, Left 1
6 78-8120-3155-3 Yoke, Triplet, Right 1
7 78-8096-5792-3 Lens, Wide Angle (254.78mm) 1
8 78-8097-3693-3 Lens, Triplet (345mm) 1
9 78-8120-4070-3 Light Shield Kit (Optional) 1
Note: Screws, nuts, bolts, clips, and other small hardware
are also contained in the Hardware Kit: P/N 78-8120-8523-7
(Refer to Section 22).
Light Shield Kit
3
1,2
6
5
7
8
4
Inverted Triplet Head only
Inverted Singlet Head only