REGLA DE CÁLCULO UNIQUE LOG-LOG 25 CM. EN BARCELONA

Regla de cálculo Unique log-log 25 cm. Regla de cálculo Unique log-log 25 cm. Sección: Cálculo Clase: Reglas de cálculo Elemento: Regla de cálculo lineal log log Marca - Autor: Unique Lugar: Brighton País: Reino Unido Modelo - Título: Log Log Descripción: Medidas: 290 x 39 x 8 mm. Material: Madera forrada de laminado plástico.Lineal 25, 7 escalas. Escalas anverso: LU, A [S, R, C] D, LL Reverso: Tabla de coeficientges trigonométricos. Made in England by Technical Supply Co., Brighton Información en la web Computing History Datación: Circa 1950 Notas: Unique are well known for their range of wood slide rules with celluloid covered paper scales, which, in spite of their cheapness, have survived in large numbers. The firm was founded by Burns Snodgrass in Brighton in 1920 and continued to manufacture slide rules until 1975. Burns Snodgrass (died 1954 aged 68) was also the author of "Teach Yourself the Slide Rule". Unique was one of the largest makers of slide rules in the UK. They tended to produce similar rules for a long periods so it is sometimes difficult to date them.