DR. Tillwich Type 3-5 Clock Oiler Type 3-5 clock oiler is made by Dr Tillwich as a reliable and effective clock oil. This partially synthetic clock oil and instrument oil contains additives for high aging and oxidation stability and a very high corrosion resistance. Designed for the clockmaker, to be used for metal bearings with diameters of 1 to 5 mm. Working range for this oil is -10 celcius to 80 celcius (14 F to 176 F). This oiler has a fine tip, contains 8ml of oil.