6 adjustable industrial workshop stools, 50s/60s

Rare set of six workshop stools from the 50s/60s, made of metal, and wooden seat, resting on 3 legs and adjustable in height. Ultra resistant, they came from an old workshop in Auvergne. Originally, they must have all had a classic blue paint, which, over time, has disappeared to give way to a pretty blue and metal patina. They therefore rest on 3 legs, one of which also has a hoop around it to place your feet. Three have a black plastic wheel to be able to raise or lower the stool to your height and three others just have a crank system to turn. Some have the rotating tray. They have all been revised, are all functional, can be used as a stool or go up to 72 or even 76 cm for the highest in order to use them as a bar stool. The basic seat height is 50 to 51 cm, and they weigh about 4 kg each. They are therefore very robust, stable and today ideal for making a functional decoration for craftsmen, shops, restaurants, guest houses. Low seat height from 50 to 52 cm. High seat height from 72 to 76 cm.