Pickett Model 8 McGann Industries Variable Density Flow Computer

Country of manufacture: USA,            Date of manufacture: >= 1959
Overall length: 31.0 cm,          Width: 5.2 cm,           Weight: 131.5 gms
Materials: all aluminum, adjustable
Cursor: 2.9 X 6.4 X 0.8 cms; all plastic, slightly magnifying, adjustable; lines = single line, front and back
Scales: 33, specialized
Front: PT/P, TT/T, λ, M, J4, J3 [ λ4, λ3, λ2, λ1, λ0 ] J2, J0-1 & M, λ, TT/T, PT/P
Back: LL1 +.00D, LL1 -.00D, LL2 +.0D, LL2 -.0D, DF/M [ CF/M, TH, SH, Ln, L, CI, C ] D, LL3 +.D, LL3 -.D, LL4 +D., LL4 -D.
Gauge Marks: [ π, e, ε (2.718), R (5730), 7854 ]
Condition: C4 (Minimal signs of use)
Came with: Original brown leather case