A glass muller is used along with a grinding slab to grind pigment into oil, without a huge amount of effort, in order to make your own oil paint.
Jackson’s long handled glass muller is perfect for grinding while sitting down. It has a comfortable, elongated top and measures approx. 9-10cm diameter and has a height of 13cm. It is made of tempered glass and has a tooth on the bottom edge to make it a suitable tool.