S4471 GENIAC Otis King Cylindral Telescopic Pocket Calculator

Review GENIAC Otis King Cylindral Telescopic Pocket Calculator 1941/42

Geniac S4471 Otis King Cylindrical Telescopic Pocket Calculator (1941-1942)

The Geniac S4471 Otis King Cylindrical Telescopic Pocket Calculator, manufactured between 1941 and 1942, is a rare and intriguing artifact of mathematical innovation. This calculator, designed by the renowned Otis King, showcases a unique design that sets it apart from its contemporaries.

Measuring approximately 6.5 inches long, 2 inches wide, and 1 inch thick when closed, this compact calculator is an ideal companion for those on the go. Its cylindrical shape, with a diameter of just over 1 inch, allows it to be easily carried in a pocket or purse. The calculator's sleek design is further enhanced by its polished brass finish, which adds an air of sophistication and elegance.

Upon opening the calculator, users are greeted by a series of telescoping dials, each with a specific function. The outermost dial serves as the carrying handle, while the next three dials are dedicated to addition, subtraction, and multiplication. The innermost dial is a constant, displaying the value of Pi to five decimal places.

To perform calculations, users turn the dials to the desired value and then read the answer off the topmost dial, which displays the result of the calculation. The calculator's design allows for quick and easy calculations, making it an invaluable tool for business professionals, students, and anyone in need of performing complex mathematics on the go.

The Geniac S4471 Otis King Cylindrical Telescopic Pocket Calculator is not only a functional device but also a piece of design history. Its unique cylindrical design and telescoping dials represent a departure from the more common flat-dial calculators of the time and offer a glimpse into the creative minds of its inventors. This calculator is a must-have for collectors, historians, and anyone with an appreciation for mathematical innovation and design.

The Otis Telescoping Pocket Calculator Model S4471, produced by Geniac and based on the original design by Otis Bloomfield Spunkmeyer in 1941-1942, is a unique and intriguing piece of calculating history. While it may not offer the most advanced features or computational power of modern calculators, it holds significant value for collectors and those interested in historical technology.

1. Historical significance: The Otis Telescoping Pocket Calculator is a rare and valuable piece of calculating history, making it an excellent addition to any collection.

2. Manual calculation: With no batteries or electronic components, this calculator relies on manual calculations using its telescoping mechanical wheels, which can be a fun and engaging alternative to modern electronic calculators.

3. Durability: The calculator is built using high-quality materials and features a solid metal case, ensuring its longevity and durability.

4. Portability: Its compact size and telescoping design make it highly portable, allowing users to carry it easily in a pocket or bag.

1. Limited functionality: The Otis Telescoping Pocket Calculator can only perform basic arithmetic operations (addition, subtraction, multiplication, and division). It is not capable of more complex calculations or scientific computations.

2. Time-consuming: Manual calculations using the telescoping wheels can be time-consuming, especially for more complex calculations.

3. Maintenance: As a mechanical calculator, it may require occasional maintenance and cleaning to keep it in good working order.

In conclusion, the Otis Telescoping Pocket Calculator Model S4471 by Geniac is a fascinating historical artifact and an intriguing alternative to modern calculators. While it lacks the advanced functionality and computational power of modern calculators, it offers a unique and engaging calculating experience with historical significance and portability.

If you are a collector, historian, or simply someone interested in unique and historical technology, the Otis Telescoping Pocket Calculator could be an excellent addition to your collection. However, if you require a calculator for complex computations or scientific calculations, it may not be the best choice.

If you are looking for a calculator with historical significance, a unique design, and a manual calculation experience, the Otis Telescoping Pocket Calculator by Geniac could be an excellent choice for you. However, if you require a calculator for complex computations or scientific calculations, consider investing in a modern electronic calculator instead.

Details:

A linear scale on a slide rule is used to find logs and anti-logs, which can be along with multiplication division do arbitrary powers roots. The Geniac pocket calculator was invented by otis king in 1922. The bottom scale for model l is usually 429, with 430 on top, but other pairs of numbers are sometimes found older units. Otis carter form by king 1876. Was a grocer and engineer in London who invented produced cylindrical slide rule with helical scales, primarily for business uses initially.

The model l adds a linearly divided scale section on the top, instead of two decades logarithmic ally. In London from about 1922 to 1972. However, because of inaccuracies in tic-mark placement, some portions its scales will read off by more than they should. It can perform multiplication and division, logs, anti-logs, square roots arbitrary exponential powers.

specifications vintcalc:

• brand: Geniac
• mpn: S4471
• part type: Pocket Calculator
• country/region of manufacture: United Kingdom
• vintage: Yes

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• category: Electronics > Vintage Calculators

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• sold #: 14
• started: july 14, 2025
• quantity: 1
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