The most popular LORUS products:

V657
737
V52H
ROTARY SLIDE RULE
Y735
W207
V52Z
V52T
V071
V422
V072
BAND
V421
V621
V52S
Y182
Y923
W620
Y922
V52Y
W942
W240
V851
Y704
V142
Y737
Y717
V182
W209