Thornton F-5100 Blackbody Radiation Rule

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Country of manufacture: England,            Date of manufacture: ____
Overall length: 48.8 cm,          Width: 9.6 cm          Weight: ___ gms
Materials: laminated printed paper scales attached to a wooden base
Cursor: 5.6 X 10.0 X 0.6 cms; all plastic, adjustable; lines = single line, front only
Scales: numerous specialized
Front: 'PHOTONS' g, f, e [ h, j, i, l, k, m ] 'ENERGY' d, c, b, a
Slide Back:          [ n, p, o, r, q, s ]
Back: 3 Log scales, instructions, physical constants, and tables of formulae
Gauge Marks: [       ]
Condition: C4 (minimal signs of use),            Came with: nothing
Note: An explanation of the scales and how to use the rule is shown in the publication, "Instructions for the Use of A Slide Rule for Radiation Calculations", by M. W. Makowski, available here.

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