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Linear Interpolation Calculator NEW!

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Gravimetric Proving worksheet NOW available!

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Calibrating Open Neck Provers. Now with examples!


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Welcome to our new and updated site. Browsing through the site you will find information on mass and liquid measurement as well as discussions on many of the latest consumer measurement issues. Take a look at our ever popular and expanding calculators & conversion sections.

We have just added sections on calibrating open neck provers and made available our Gravimetric Proving Worksheet. Also now available is the H2O density reference book and an open neck proving worksheet. There is so much to see, please look around and don't hesitate to contact us with your comments or to enquire about your custom metrology software needs.

Come back often as we are still editing daily and there will always be lots of new information. Please drop us an email and let us know what you think.

Calculators and Converters

Ever want to know how many Stones you weigh or how many Fathoms in a Furlong? No worries, we can tell you. Simply select one of our unit converters and calculate away!

While the unit converters are fun and may be useful, our commodity calculators could actually help save you money. There are handy calculators for figuring out how much firewood you received, how many board feet in the oak hardwood board you bought for your mantle or how much propane should be in your barbeque tank. These calculators will allow you to ensure that your dealer is giving you fair measure when buying these commodities.

By the way, there are 110 fathoms (1 fathom = 6 feet) in a furlong and 1 stone is equal to 14 pounds or about 6.35 kilograms.

Although we prefer Metric units of measure for the ease of use, we don't discriminate. Our calculators and converters will work in both systems. Think you know the Imperial system? Bet you don't! How many ounces in a gallon? Think it is 128? You are probably an American, but you are wrong! Think it is 160? You are probably a Canadian (or a Brit), but the answer is still wrong! Think we are wrong? No, we are not wrong - do you want to know why?

Of course you do! The reason is simple. The question didn't provide enough information. The biggest 'problem' with the imperial system of measurement is the fact that the same unit can mean so many different things. Ounces, for example, are not only a measure of mass, but even if we assume liquid, the Canadian (and British) Imperial fluid ounce is a different size than the US fluid ounce. The Imperial fluid ounce is equal to approximately 28.4 millilitres while the US fluid ounce is equal to 29.6 millilitres. Even more ridiculous is the gallon! Although both the US and Imperial gallon contain 4 quarts, the imperial gallon consists of 160 imperial fluid ounces (4.546 litres) while the US gallon consists of 128 US fluid ounces (3.785 litres). Still think you know the Imperial system?

Anyone else want to complain about the metric system? Please go to Ramblings... and feel free to leave your opinion. Oh, and for our American readers, I apologize for the spelling. Please assume litre=liter, metre=meter, etc.

Last modified: 07 December 2007 04:30:07