Homemade thermometer made up of a wooden block, paper handwritten scale and a broken glass tube. The block measures 135 x 12 x 5mm. On top of this is a paper scale marked -100 to +500 (no units mentioned). To the left of the glass the scale is marked in divisions of 100, in between and to the right of the glass every 50 is marked. The glass tube is attached to the base through the scale with wire and is broken. The tube has a silver bulb at the bottom.