BRL T.50 Duplex Janus Series

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Country of manufacture: England,            Date of manufacture: ____
Overall length: 32.8 cm,          Width: 4.2 cm,           Weight: 179.0 gms.
Materials: PVC body, stainless steel endbraces, adjustable
Cursor: 3.5 X 5.3 X 1.0 cms; glass and stainless steel; lines = Single hairline, front and back
Scales: 20, no extensions
Front: L, LL1, DF [CF, CIF, CI, C] D, LL3, LL2
Back: LL0, LL00, A [B, T, ST, S] D, DI, K
Gauge Marks: [ π, ρ(6366), ρ', ρ'', C, C1, e ]
Condition C5 (normal use) previous owner has lightly inscribed numbers on front side left of scale indices:
Came with: nothing

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