Pickett Model 17 Electro Optical Industries Blackbody Radiation Rule

Country of manufacture: USA, Date of manufacture: abt. 1970
Overall length: 30.8 cm, Width: 5.2 cm, Weight: 129.6 gms
Materials: all aluminum, adjustable
Cursor: 2.9 X 6.5 X 0.9 cms; all plastic, slightly magnifying, adjustable; lines = single line, front and back
Scales: 34, specialized
Front: H_0-∞, H_λm, t_f, t_c, T [ H_λ₁/H_λm, H_λ₂/H_λm, M(H_λm), M(H_0-∞), H_0-λ₁/H_0-∞, H_λ₂-∞/H_0-∞, C ] D, λ₁, λ₂, V₁, V₂, V_n/√(RΔf)
Back: Q_0-∞, Q_λm, t_f, t_c, T [ Q_λ₁/Q_λm, Q_λ₂/Q_λm, M(Q_λm), M(Q_0-∞), Q_0-λ₁/Q_0-∞, Q_λ₂-∞/Q_0-∞ ] λ₁, λ₂, V₁, V₂, E_λm
Gauge Marks: [ π, e, 785, R ]
Condition: C2-C3 (Mint to Very minimal signs of use)
Came with: Original red leather case w/plastic insert, imprinted with Electro Optical logo and "Radiation Slide Rule"
Notes: Instructions for use of this rule my be found at: https://archive.org/details/BlackbodyRadiationSlideruleManualOfInstructionAndInformation