Sunshine Recorder Model
Model No. HV-EXP290
In this unit a round bottom flask is used as asphere. It may be filled with water when it isto be demonstrated. The sunrays arefocused by the glass globe of the sunshinerecorder, and will char a piece of the paperdial. From the length of the charred portionthe hours of the sunshine can be calculated. The unit hasadjustable arrangement to set it at required latitude. Withtwelve spare printed dials and other necessary components.in case
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