MINERVA PROFESSIONAL MECHANICAL CURVIMETER! Extremely rare. Beautiful mint object. Curvimeter with 4 scales: 1:100, 1:50, 1:25 and 1:20. • The measuring wheel is supported by 2 jewel bearings. • It has with a lap counter and a reset button (zero setting). • Model: stainless steel case. • Includes original plastic storage box. . In mint condition, 1980s. High-quality Swiss Made blueprint / map meter. "Minerva Switzerland" engraving on the back. Total length 10 cm, dial diameter 4 cm and 0.9 mm high. Used for rallies, nautical purposes and architecture. Minerva Curvimeter is a precision instrument which measures and records straight or curved distances with high precision and speed, backward or forward motion. The Minerva Curvimeter is excellent for blueprint, drawing or map scaling. A pushbutton resets the indicator at zero. The tracer wheel incorporates two jewel bearings. The barometer will be carefully packaged for shipping, but it can also be picked up in Haarlem.