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NPV. Grady Precision Measurement Tools has forecasted the following sales and costs for a new GPS system: annual sales of 44,000 units at $18 a unit, production costs at 38% of sales price, annual fixed costs for production at $200,000. The company tax rate is 38%. What is the annual operating cash flow of the new GPS system? Should Grady Precision Measurement Tools add the GPS system to its set of products? The initial investment is $1,440,000 for manufacturing equipment, which will be depreciated over six years (straight line) and will be sold at the end of five years for $380,000. The cost of capital is 11%