Abbreviations and Specific Names. Abbreviations and acronyms based on proper nouns should be written in all capital letters. In most cases, derivative words do not need to be capitalized. This applies to terms based on a professionalâs surname that are used in a general sense today.
Length times width times depth (L x W x D) measures cubic feet and must be measured in feet.
Fathom is an imperial, US customary length unit and usually used to measure the depth of water. The abbreviation is ftm. Meter is a metric system base length unit and defined as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. It equals to 3.2808399 feet or 39.3700787 inches. The abbreviation is m. For other length unit conversions, please go to Length Conversion.