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Regla de cálculo J Halden and Company Limited (Joseph Halden) Halden's Calculex - Modelo de bolsillo

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Lot information

Sold on 10/12/2024

Sale modality: Direct Sale

Condition of the lot: Good (just a few signs of use)

Section: Antique slide rules

Description

Elemento: Regla de cálculo tipo reloj

Marca - Autor: J Halden and Company Limited (Joseph Halden)

Lugar: Manchester

País: Reino Unido

Modelo - Título: Halden's Calculex - Modelo de bolsillo

Dimensiones: 64 mm. de diámetro.

Material - Técnica: Metal plateado con escalas sobre fondo blanco, en ambas caras.

Información: Web Rechnerlexikon y Web Museum of Applied Arts and Sciences - Sidney.

Datación: Posterior a 1905.

Documentación: Rules, Tables and Formulae for Patent Circular Slide Rule. Dos ejemplares originales de 77 y 95 páginas, respectivamente.

Complementos: Caja de metal con forro de terciopelo azul.

Estado de conservación: Muy bueno

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