div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Halden Calculex Manual - Rechnerlexikon · THE Halden Caleulex is a slide rule made up in circular form The circular metal dial on which the scales are engraved by a new process src=https:reader033fdocumentsinreader033viewer2022051812602fa84dc94d6028fd4d15ebhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Halden Calculex Manual - Rechnerlexikon · THE Halden Caleulex is a slide rule made up in circular form The circular metal dial on which the scales are engraved by a new process src=https:reader033fdocumentsinreader033viewer2022051812602fa84dc94d6028fd4d15ebhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: Halden Calculex Manual - Rechnerlexikon · THE Halden Caleulex is a slide rule made up in circular form The circular metal dial on which the scales are engraved by a new process src=https:reader033fdocumentsinreader033viewer2022051812602fa84dc94d6028fd4d15ebhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: Halden Calculex Manual - Rechnerlexikon · THE Halden Caleulex is a slide rule made up in circular form The circular metal dial on which the scales are engraved by a new process src=https:reader033fdocumentsinreader033viewer2022051812602fa84dc94d6028fd4d15ebhtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: Halden Calculex Manual - Rechnerlexikon · THE Halden Caleulex is a slide rule made up in circular form The circular metal dial on which the scales are engraved by a new...