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3M™ Overhead Projector 1800 Illustrated Parts Breakdown
© 3M 2004 11
Arm Assembly Parts List
(Serial number 18040828 and above)
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 Assembly Kit 1
2 - - - Arm, Focus (must order 78-8120-8575-7) 2
3 See note Pad, Insert 2
4 See note Plate, Standoff 1
5 See note Clamp, friction 1
6 See note Pressure Bar 1
7 See note Spring, Compression 2
8 See note Screws, Shoulder 2
9 See note Cap, Focus 1
10 RO-0038-1149-2 Knob, Focus Gear, Blue 1
11 78-8079-8744-7 Rack, Focus 1
12A 78-8120-8513-8 Post, Inverted Arm 1
12B 78-8120-8514-6 Post, Basic Arm 1
13 78-8120-8537-7 Arm / Post / Inverted Singlet Head Assembly (Not shown) 1
14 78-8120-8539-3 Arm Assembly, Inverted Triplet Head Assembly (Not shown) 1
NOTE: At the time of printing, this item is not available for purchase as an individual part.