BRL P1415 Water Flow Calculator - Hazen-Williams Formula

---

Country of manufacture: England,            Date of manufacture: ____
Overall length: 31.0 cm,          Width: 6.7 cm,           Weight: 63.7 gms
Materials: all plastic, no cursor
Scales: 20, specialized
Front: M.G.D. [ Dia. In. C.F. ] G.P.M. (1 - 10⁴), G.P.M. (10² - 10⁶) [ Dia. In. C.F. ] M.G.D., V ft/sec [ C C.V. ] 1 ft/1000ft, C.F., C.D., C.V.
Back: Type of Pipe [ Dia In. ] Coeff. C, Nominal Internal Diameter [ Value ], Instructions, Type of Fitting [ Equiv. Length Feet ]
Gauge Marks: [       ]
Condition: C3-C4 (Very Minimal to Minimal Signs of Use)
Came with: Original black plastic sheath labeled, "Stanton and Staveley Limited, Near Nottingham England"

---

Front of Slide

Back of Slide

---