1. Looks and feels like a duplex slide rule yet it is completely blank on the reverse.
2. This rule may have been made by Ricoh/Relay group as this rule and the Lutz 252 appears to be very similar to the same numbered Relay rules such as the Relay 252.

Brand	Lutz
Model	No 102 S
Country of Manufacture	Japan
Scales Front	S, K, A [B, CI, C] D, L, T
Scales Back
Number of Scales	9
Slide Rule Materials	Bamboo/Celluloid
Cursor Materials	Nylon/plastic with metal screws
Cursor Lines	1 Front
Scale Length	25 cm
Length	31.5 cm
Width	4 cm
Condition	Fair, some wear marks on the face and rear
Documentation	None
Accessories	Leather case