HAFF Planimeter No. 315
This is a HAFF Planimeter No. 315, a precision instrument used for calculating the area of irregular shapes on maps, plans, and drawings. Manufactured by HAFF of Pfronten/Bavaria, Germany, this example features a brass and steel construction with detailed scales and adjustments. The planimeter operates by tracing the outline of the area in question, with a dial indicating the calculated area – a fascinating piece of pre-digital measurement technology.
Condition and Collectibility
This HAFF Planimeter No. 315 is presented within its original fitted case, lined with blue velvet. The instrument shows signs of age and use, with some patina and wear commensurate with its age. It is of interest to collectors of scientific instruments, surveying tools, and antique drafting equipment, and would be a unique addition to any collection.
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