 Hello and welcome to the session. In this session we will describe units of measurement within a pothicurry that is pharmacy and household systems. There exists three systems of measure in medical administration and these are metric system, a pothicurry system and household system. These systems have units of measure that are approximately related to each other but are not exactly equal. Here we will discuss the units of measurement within a pothicurry system and household system. So first of all we shall discuss a pothicurry system. This system was commonly used in the past by physicians and pharmacists as the system of weight and is used for measuring and prescribing medicines. In this system, length is measured in inches, feet, yards, miles etc. Volume is measured in cups, quarts, gallons etc. Weight is measured in grains, drams, ounces, pounds, tons etc. Below you can see a pothicurry measure equivalence for weight. Here 1 grain is equal to weight of a grain of wheat, 1 scruple is equal to 20 grains, 1 dram is equal to 3 scruples, 1 ounce is equal to 8 drams and 1 pound is equal to 12 ounces. Similarly for volume, 1 linen is equal to quantity of water in a drop that weighs 1 grain, 1 fluid dram is equal to 16 linums, 1 fluid ounce is equal to 8 fluid drams, 1 pint is equal to 16 fluid ounces, 1 quart is equal to 2 pints and 1 gallon is equal to 4 quarts. Here we should note that all equivalence with a pothicurry are imprecise and milms and drams are no longer used in medication. Now we are going to discuss household measurement system. This system is commonly used to measure medications at home. This system measures small volumes of liquid and dry quantities. Here we use measuring devices such as teaspoon, tablespoon and cups. Since these are imprecise measurements, so the household system is rarely used for prescribing medicine. Household volume measure may be used in community practices when medication is administered at patients home because patients may not have measuring device at home. Household measuring equivalence are given as follows. 3 teaspoonful is equal to 1 tablespoon. 2 tablespoons is equal to 1 fluid ounce. 8 fluid ounces is equal to 1 cup. 2 cups is equal to 1 pint. 2 pints is equal to 1 quart. 4 quarts is equal to 1 gallon and 1 pound is equal to 16 ounces. We should note that all equivalence with household are imprecise. Also we should remember that in apothecary system 1 pound is equal to 12 ounces and in household system 1 pound is equal to 16 ounces. Thus in this session we have described units of measurement within apothecary and household systems. This completes our session. Hope you enjoyed this session.