The large TIM (Time Is Money) calculator shown above was based on the stepped drum calculator mechanism. This was the first type of four function calculator and these machines were inherently large and heavy. (The model shown was 21.5" x 7" x 6" and weighed 23 pounds.)
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The first stepped drum calculators were made in wooden boxes (see the Burkhardt below), but the model shown was an improved metal-cased model that was made in 1909. Because of their bulk, sales of these early machines were relatively small. (Dozens to hundreds per year.) Price was another obstacle. In today's dollars, a TIM would be priced at well over $10,000.
The first stepped drum calculators were made in wooden boxes (see the Burkhardt below), but the model shown was an improved metal-cased model that was made in 1909. Because of their bulk, sales of these early machines were relatively small. (Dozens to hundreds per year.) Price was another obstacle. In today's dollars, a TIM would be priced at well over $10,000.
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Manual four function calculator.
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For a small amount I could have a scientific calculator wrist watch, that I would never use. If I wanted to, I could use my cell phone. Actually I can do most anything I need on one of the three desk top calculators cluttering the joint.
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Which I bought for a dollar each.
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Where will it go?
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