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Puntal telescópico extensible, caracterizado, por estar constituido por un tubo recto, provisto, a una altura convenida, de un juego de asas o agarraderas diametralmente opuestas, llevando en su parte inferior una tuerca soldada para roscar en ella una espiga que es solidaria a una placa de fijación rectangular; este tubo al girar lo hace apoyándose en un casquillo cilíndrico de igual diámetro.