Tianjin 6506 Log Log Duplex-type

---

Country of manufacture: China,            Date of manufacture: ____
Overall length: 32.5 cm,          Width: 4.6 cm,           Weight: 128.1 gms
Materials: plastic slide and stators, metal end braces, adjustable.
Cursor: 3.8 X 5.8 X 0.9 cms; all plastic; lines = one line on front, one on back
Scales: 23, no extensions
Front: L, K, DF [ CF, CIF, CI, C ] D, LLo, LLoo
Back: LL01, LL02, LL03, A [ B, T, S, ST, C ] D, LL3, LL2, LL1
Gauge Marks: [ π, e, 1/e, R (573), C (1128) ]
Condition: C6 (Signs of Heavy use)
Came with: Original red cardboard case, taped up

---

---