Superjack harl-3618+ инструкция

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But technically, only the single lower U-joint prevents the mirror from turning. The other U-joints could be ball joints if one can find ball joints that can take high angles. US4798949 needs the other 4 U-joints because of the use of linear actuators. The accuracy is generally better than 1°. Great for concentrating types of solar cookers such as parabolic dishes and troughs. The solder may melt but still makes a good electrical contact.

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