L Lineal Works CI scale
Logarithm Register
C/D reading 2.7183 Model 72
Analog computation system Hairline set

Ruled Precision

Parallel logarithmic registers, black engraving, and a single red cursor line make calculation visible again.

Scale pitch 04 PX BASE
Register C / D / K
Surface FLAT RULED
Accent RECIPROCAL
11.11.21.31.51.722.534610
A
11.11.21.41.622.53.2510
024680246
CI
108765432.521
987654321
Sliding register aligned to 2.7183
C
11.11.251.41.622.53510
012345678
D
11.11.251.41.622.53510
012345678
K11.331.782.373.165.6210
L0.00.10.20.30.40.50.60.70.80.91.0
This is the Slide Rule design system, applied by Curio Design — a design-style library for AI agents. Full Slide Rule guide → designbycurio.com/learn/slide-rule-engineering