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3M™ Overhead Projector 1800 Illustrated Parts Breakdown
© 3M 2004 9
Arm Assembly Parts List
(Serial number 18040827 and below)
Item 3M Part Number Description Qty.
1A 78-8120-8575-7 Arm Kit (includes basic post) 1
1B 78-8120-8576-5 Arm / Offset Post Kit 1
2 - - - Arm, Focus (must order 78-8120-8575-7) 2
3 78-8120-4017-4 Pad, Tension 1
4 78-8120-3069-6 Pad 1
5 78-8120-3142-1 Cap, Focus 1
6 78-8120-3153-8 Knob, Focus Gear, Blue 1
7 78-8079-8744-7 Rack, Focus 1
8A 78-8120-8513-8 Post, Inverted Arm 1
8B 78-8120-8514-6 Post, Basic Arm 1
9 78-8120-8537-7 Arm / Post / with Inverted Singlet Head Assembly (Not shown) 1
10 78-8120-8539-3 Arm / Post With Inverted Triplet Head Assembly (Not shown) 1