Mathematical calculations are done by aligning a mark on the sliding central strip with one on one of the fixed strips. The relative position of other marks can then be observed. Numbers aligned with the marks give the approximate value of the product, quotient, or other calculated result.
m æ θ ɪ m æ t ɪ k ə l WORD_BOUNDARY k æ l k j ʊ l eɪ ʃ ə n z WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY d ʌ n WORD_BOUNDARY b aɪ WORD_BOUNDARY ʌ l aɪ n ɪ ŋ WORD_BOUNDARY ʌ WORD_BOUNDARY m ɑ ɹ k WORD_BOUNDARY ɔ n ð ə WORD_BOUNDARY s l aɪ d ɪ ŋ WORD_BOUNDARY s ɛ n t ɹ ə l WORD_BOUNDARY s t ɹ ɪ p WORD_BOUNDARY w ɪ ð WORD_BOUNDARY w ʌ n WORD_BOUNDARY ɔ n WORD_BOUNDARY w ʌ n WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY f ɪ k s t WORD_BOUNDARY s t ɹ ɪ p s WORD_BOUNDARY ð ə WORD_BOUNDARY ɹ ɛ l ə t ɪ v WORD_BOUNDARY p ə z ɪ ʃ ə n WORD_BOUNDARY ʌ v WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY m ɑ ɹ k s WORD_BOUNDARY k æ n WORD_BOUNDARY ð ɛ n WORD_BOUNDARY b iː WORD_BOUNDARY ə b z ɜː v d WORD_BOUNDARY n ʌ m b ə ɹ z WORD_BOUNDARY ʌ l aɪ n d WORD_BOUNDARY w ɪ ð ð ə WORD_BOUNDARY m ɑ ɹ k s WORD_BOUNDARY ɡ ɪ v WORD_BOUNDARY ð ɪ WORD_BOUNDARY ʌ p ɹ ɑ k s ɪ m ə t WORD_BOUNDARY v æ l j uː WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY p ɹ ɑ d ʌ k t WORD_BOUNDARY k w oʊ ʃ ə n t WORD_BOUNDARY ɔ ɹ WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY k æ l k j ʊ l eɪ t ɪ d WORD_BOUNDARY ɹ ɪ z ʌ l t WORD_BOUNDARY