Hyperbolic Match Output

Number:106b

Maker:U. S. BLUEPRINT (USA/HEMMI)

Model:No. 1893 Duplex Slide Rule (For Electrical Engineer)

Scales Front:

Scales Back:

Gauge Marks:

Cursor Front:

Cursor Back:

Construction:

Date:

Source: P.Ross

Information: Note: Has Gudermannian scales. Same as Hemmi 153 See 41.