Rare KM miles Gas Boy Tankfix gauge

Rare Kilometer miles gas boy tankfix gauge in used condition. The miles couter is working good and the size is 9,5 x 5,5 cm. The rear is magnetic to mount on the dashboard. It is marked with “KM Stand Abfahrt (miles on departure) / VOLLGETANK BEI Km (miles last fuel fill up) / Inspektion bei Km (last car check) / one more for...”. Made in Germany.