Optosensors (4.5V) and Discs

Details
Title
Optosensors (4.5V) and Discs
Number
# 1343
Parts
4
How is this number calculated?
Parts
100%
(4)
Released
1986
Theme
Build instructions
Parts
There are 2 different parts with a total quantity of 4.
Standard parts
(2 unique parts - Total quantity of 4)
2 x
upn0178

2 x
upn0178
2 x
2723pr0005

2 x
2723pr0005