Sonin Inch Mate Scientific Calculator Model DT110 Construction - UNTESTED -

Construction Master III 3 Calculator Calculated Industries - Tested Works Great

Victor C5000 Construction Materials Calculator Yellow Handheld Estimating Tool

Calculated Industries ProjectCalc Plus 8525 Construction Calculator Tested!

Vintage Measure Master II Calculator Calculated Industries Construction

Vintage Construction Master Dimensional Calculator w/ Case & User Guide

Sonin Inch Mate Scientific Construction Calculator Model DT110 InchMate Tested

Vintage Construction Master IV Calculator - Calculated Industries Model 4045