97th Auction
2018/5/12
Lot 65
Clemens Riefler, Nesselwang, Case No. 3214, 295 mm, circa 1938
Field Artillery Fire Direction Plotter
Case: steel, nickel-plated.
The instrument works like a type of complicated slide rule and determines the angle of a projectile and the distance to the target through the positions of the artillery piece, the target and an observer. The company Riefler, known for their precision timepieces, originally built top quality drawing instruments and continued to do so long after the production of clocks had been discontinued; during World War II the company was called on to produce such ballistic calculators. An identical instrument is owned by the Mathematics Department of the Deutsches Museum in Munich.
Field Artillery Fire Direction Plotter
Case: steel, nickel-plated.
The instrument works like a type of complicated slide rule and determines the angle of a projectile and the distance to the target through the positions of the artillery piece, the target and an observer. The company Riefler, known for their precision timepieces, originally built top quality drawing instruments and continued to do so long after the production of clocks had been discontinued; during World War II the company was called on to produce such ballistic calculators. An identical instrument is owned by the Mathematics Department of the Deutsches Museum in Munich.
Sold
estimated
650—1.000 €
Price realized
700 €