Infrared Industries Inc., Infrared Slide Rule

Country of manufacture: USA,            Date of manufacture: ____
Overall length: 16.2 cm,          Width: 9.8 cm.,           Weight: 20.8 gms.
Materials: cardboard
Cursor: no cursor
Scales: 15, specialized
Front: Wave Number, °K, Q, Qp, W, Wp, Wλ/Wp, λ, Wo-λ/W, Qλ/Qp, λ, Qo-λ/Q
Back: °F, °C, °K, Formulae for Detector Figures of Merit, Notes on Interference Filters ad Coatings
Info on Back of Slide: Transmissions of various optical materials and the atmosphere
Condition: C3 (Very Minimal signs of use).
Came with: Instruction sheet