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Home Edu. Lab Materials Physics Lab Materials Post Office Box (PO Box) for Physics Practical
250 ml Glass Reagent Bottle Wide Mouth ৳ 310 Original price was: ৳ 310.৳ 300Current price is: ৳ 300.
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Optical Bench For Physics Lab Use ৳ 1,900 Original price was: ৳ 1,900.৳ 1,800Current price is: ৳ 1,800.

Post Office Box (PO Box) for Physics Practical

৳ 5,200 Original price was: ৳ 5,200.৳ 5,000Current price is: ৳ 5,000.

  • indian Post Office Box 1 Set
  • Measure an unknown resistance
  • Premium Quality PO Box
  • Made in India
If you have any query, please feel free to contact us

Hotline : 01715575665, 01713297170

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Categories: Edu. Lab Materials, Lab Equipment's, Physics Lab Materials Tags: Laboratory Equipment Price in BD, Physics Lab Equipment Price in Bangladesh, Physics Lab Materials Tags: Educational Lab Apparatus in BD, PO Box, Post Office Box
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Description

A post office box is a compact form of the Wheatstone’s bridge. A Post Office Box can also be used to measure an unknown resistance. It is a Wheatstone Bridge with three arms P, Q, and R; while the fourth arm is the unknown resistance. P and Q are known as the ratio arms while R is known as the rheostat arm.

Post Office Box (PO Box) for Physics Practical Class & Exam

Plug-in type. The heavy brass contact blocks are bonded to the vulcanite plated by a double nut system. The plugs & lugs are cut to a finer taper & are interchangeable. The plug heads are machine molded of bakelite.

Each resistor is independently mounted with double leads. The accuracy of Constantan coils is 0.1% for lower values & 0.5% for higher values. Resistor: the best-imported constant wire is wound on ebonite spools; the method adopted is non-inductive & non-magnetic. Each resistor is dipped in boiling wax. Provided as above with 3 ratio coils of 1000, 100 & 10 ohms. Rheostat arm 15,000 ohms. Two tapping keys with silver contacts are provided for the battery & galvanometer in a teakwood case with a hinged lid.

  • Overall dimensions: 280x200x175mm approx.
  • Premium Quality PO Box
  • Made in India
  • Note: Product Color, Size & Size may be different from the picture.
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    Importer & Supplier of Scientific Instrument for School, Collage, University, Laboratory, Chemical & Surgical  works. S.T. International is one of the most popular Scientific Lab Equipment Seller in Bangladesh.

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      52/2, Toyeanbee Circular Road
      Hatkhola, Tikatuli, Dhaka-1203
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    Post Office Box (PO Box) for Physics Practical

    ৳ 5,200 Original price was: ৳ 5,200.৳ 5,000Current price is: ৳ 5,000.
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