17 Free Photos of Slidrule

calculatormathplanimeterretrocomputingbwblack and whitemonochrome
1954 35058
calculatormath
GPN-2000-000353
calculatormath
1955 38173
calculatormath
1957 43713
calculatormath
1957 43712
calculatormath
1956 42045
calculatormath
1956 42046
calculatormath
1954 35056
calculatormath
1954 35059
architecturecalculator
EL-2001-00471
calculatormath
1949 23124
calculatormath
1955 38172
calculatormath
1954 35053
calculatormath
1951 27174
calculatormath
1954 35055
monochromecalculator
E49-0053
monochromecalculator
1954 35057
monochromecalculator
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