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Sonin doesn't make these anymore--they stopped about 4 years ago. Any new ones that you purchase might not work, as ours didn't. Read morePublished 18 months ago by El-Nor
Where ever these came from 2 out of the 4 were trash,
The digital display was all messed up. unable to read the numbers.
Great..need to design a steel fabrication calculator with chords and cambers. would have got more stars except no thirty seconds.Published 22 months ago by George Taylor
Ive had an 'inch mate' calulator for many years, loved it for its ability to do fractions.
Finally wore it out and needed a replacement. Read more
both of the calculators stoped working on the first day of use. I am now sending them bac k for refundPublished 24 months ago by Kevin Doktor
THis calculator is great for adding fractions. I had a job with lots of fractional measurements, and it was accurate and saved me lots of time rather than working with pencil and... Read morePublished on June 7, 2013 by The Lazy Cook