Etsyntha Type 3-5 Clock Oil caseback 85 mm round domed sapphire

85 mm round domed sapphire crystal

It is graduated from US sizes 1 to 16 in

These tools are designed so that they can be used without having to remover the balance wheel or the balance bridge from the watch movement

20 mm x 32

8 steel double ended keys

Etsyntha Type 3-5 Clock Oil caseback 85 mm round domed sapphireEtsyntha Type 3 5 Clock Oil Etsyntha Type 3 5 Clock Oil is made by Dr Tillwich as a reliable and effective clock oil. This partially synthetic clock oil contains additives for high aging and oxidation stability and a very high corrosion resistance. Designed for the clock maker, 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 is a 30 ml bottle of clock oil.