Post Office Box (PO Box) for Physics Practical

৳ 4,200

  • Deshi Post Office Box 1 Set
  • Measure an unknown resistance
  • Premium Quality PO Box
  • Made in Bangladesh
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  • Post Office Box (PO Box) for Physics Practical

    ৳ 4,200

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    •   Size Guide

      Size Guide

        Size Chest Waist Hips
        XS 34 28 34
        S 36 30 36
        M 38 32 38
        L 40 34 40
        XL 42 36 42
        2XL 44 38 44

        All measurements are in INCHES

        and may vary a half inch in either direction.

        Size Chest Waist Hips
        2XS 32 26 32
        XS 34 28 34
        S 36 30 36
        M 38 32 38
        L 40 34 40
        XL 42 36 42

        All measurements are in INCHES

        and may vary a half inch in either direction.

        Size Chest Waist Hips
        XS 34 28 34
        S 36 30 36
        M 38 32 38
        L 40 34 40
        XL 42 36 42
        2XL 44 38 44

        All measurements are in INCHES

        and may vary a half inch in either direction.

      •  Delivery & Return

        Delivery

        We ship to all 50 states, Washington DC.
        All orders are shipped with a UPS tracking number.
        Always free shipping for orders over US $200.
        During sale periods and promotions the delivery time may be longer than normal.

        Return

        Elessi will accept exchanges and returns of unworn and unwashed garments within 30 days of the date of purchase (14 days during the sales period), on presentation of the original till receipt at any store where the corresponding collection is available within the country of purchase.

        Your return will usually be processed within a week to a week and a half. We’ll send you a Return Notification email to notify you once the return has been completed.
        Please allow 1-3 business days for refunds to be received to the original form of payment once the return has been processed.

        Help

        Give us a shout if you have any other questions and/or concerns.
        Email: contact@mydomain.com
        Phone: +1 (23) 456 789

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        Post Office Box (PO Box) for Physics Practical

        ৳ 4,200

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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 Bangladesh
        • Note: Product Color, Size & Size may be different from the picture.


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