Somar Laboratories Inc Spectro-Rule for X-Ray Spectroscopy

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Country of manufacture: USA,            Date of manufacture: >= 1968
Overall length: 45.7 cm,          Width: 8.9 cm           Weight: 374.7 gms
Materials: aluminum
Cursor: 3.2 X 10.0 X 0.9 cms; all plastic, adjustable; lines = single line on both front and back
Scales: numerous specialized
Front (Side A): Atomic No., Symbol, Elements, K_αβ (Å), L_IIIαβ (Å), C [ D, emission distributions for Chromium, Tungsten, Molybdenum, Silver, Gold, and Platinum targets ] Absorption Edge (Å), KV, KV (continuous), Continuous X-Ray Producton Efficiency Constamts for all 6 target materials
Back (Side B): Detect. Range, First Order Reflections (L_β1, L_α1, K_β1, K_α1), λ (Å) [ Crystal Range Chart (specific crystal, 2d spacing Reflection Planes (hkl), Lowest Element Examinable for both "K" and "L" Series, Indexing lines for each crystal type ] 2θ (degrees), Second Order Reflections (K_α2, K_β2, L_α2, L_β2)
Gauge Marks: [       ]
Condition: C3 (Very minimal signs of use),            Came with: nothing

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