A professional who tends equipment to weigh oils and other ingredients used in making margarine or shortening, following standard formulas. Respnsibilities include:

• Starts pump, and turns valve to admit ingredients into scale tank until specified weight has been reached.
• Positions weights on scale bar to weigh additives or smaller batches of ingredients.
• Records weights of ingredients.
• Turns valves to empty weighed ingredients from scale tanks into mixing vat for blending.
• May turn valve to admit air into scale tanks to agitate and mix ingredients.