Construction Master IV Special Edition


Year of introduction 2002
Function Construction
Model Number 4045SE
Power 1 3-volt lithium battery
Original Price $69.95
Photo credit Mark Bollman

    The Construction Master IV Special Edition was released in 2002 to commemorate the 25th anniversary of Calculated Industries.  This is a slight functional modification of the Construction Master IV--the wt/vol function and the stairway functions on the number keypad are new to this version.  Additionally, this is the first Construction Master calculator to sport a streamlined design and hard sliding cover.

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