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I deal with numbers of all kinds for my work. I have never used the methods in this puzzle before but I use some everyday!
Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
Method of Test for Snag Resistance of Hosiery
Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method