What makes a lb

Improve this question. Community Bot 1. Thomas Arildsen Thomas Arildsen 2 2 gold badges 6 6 silver badges 9 9 bronze badges. Duodecimal systems were not infrequently used around the Mediterranean, but the exact development and origin of why the Romans divided an as into 12 uncia is not entirely certain.

Shauna, in Mediaeval times, apart from minutes and seconds, an hour was separated into four points a quarter of an hour, or seconds , each of which consisted of ten moments 90 seconds , which were again subdivided into twelve ounces 7.

Maybe the answer is really "the Imperial measurement system makes no sense at all" : — SqlRyan. It's not clear why they inflated to 15 and 16 ounces — perhaps they wanted easy divisibility by five, or they commonly weighed things closer to a multiple of 7, grains. Show 3 more comments. Active Oldest Votes.

Improve this answer. Nitpick; I believe it was actually milia passuum. Oops, I got my singular and plural mixed up there. Same thing happened with minuta prima and minuta secunda , from which we get "minute" and "second".

Ah, never mind. I was wondering why you said pondo while the classical ablative would be pondere , but it appears pondo is an idiomatic adverb in classical Latin, from an archaic ablative pondo. Add a comment. TrevorD TrevorD But the Americans and British aren't the only people to take words from the Ancient romans.

The Italian word "lira," which was the country's currency from to , also derives from libra. As does the pound sign today more commonly known as a hashtag , which is a nod to the way medieval scribes wrote the abbreviation "lb. And there you have it! Product Reviews. Home Ideas. Conversion Factors heavier to lighter units of measurement.

Conversion Factors. You can use the factor label method to convert one customary unit of weight to another customary unit of weight. E ach of these conversion factors is a ratio of equal values, so each conversion factor equals 1.

Multiplying a measurement by a conversion factor does not change the size of the measurement at all, since it is the same as multiplying by 1. It just changes the units that you are using to measure it in. Two examples illustrating the factor label method are shown below.

How many ounces are in pounds? Begin by reasoning about your answer. Since a pound is heavier than an ounce, expect your answer to be a number greater than.

Multiply by the conversion factor that relates ounces and pounds:. Write the mixed number as an improper fraction. There are 36 ounces in pounds. How many tons is 6, pounds? Since a ton is heavier than a pound, expect your answer to be a number less than 6, Multiply by the conversion factor that relates tons to pounds:.

Apply the Factor Label method. How many pounds is 72 ounces? There are 16 ounces in a pound, not The correct answer is. There are 16 ounces in a pound, not 3. Pounds are heavier than ounces, so the answer must be less than Multiply by , not. Applying Unit Conversions. There are times when you need to perform calculations on measurements that are given in different units.

Print Email this Page. Weights The Imperial system used in England and Wales involved three main types of weight measurements, used for different things: Avoirdupois weight Troy weight Apothecaries' weight The standard measure of weight in each was the pound lb. Avoirdupois weight This was used to measure large and bulky items, and was the most common weight measurement, eventually becoming the standard for virtually all weights. Table of units of measurement: Measurement Equivalent 16 drams 1 ounce oz 16 ounces 1 pound lb 14 pounds 1 stone st 2 stones 1 quarter qtr 4 quarters 1 hundredweight cwt 20 hundredweight lb 1 ton The ton was sometimes called the Long Ton to distinguish it from the American ton, which equated to lb.

Table of units of measurement: Measurement Equivalent 24 grains 1 pennyweight dwt 20 pennyweight 1 ounce oz 12 ounces 1 pound lb A troy pound, at grains about Detail from inventory of plate, Ne 5 I 1 Apothecaries' weight This was a version of Troy weight, used by apothecaries or pharmacists to measure out their powders. Table of units of measurement: Measurement Equivalent 20 grains 1 scruple 3 scruples 1 dram or drachm 8 drams 1 ounce oz 12 ounces 1 pound lb Apothecaries' measures were officially abolished by the Weights and Measures Act of Browser does not support script.

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