Portek Ultra MK4 Chainsaw Sharpener 

Ultra MK4 Sharpener (Part No: 095C)
The machine for the professional user.
Powerful high quality hydraulic autoclamp chainsaw sharpener - the hydraulic autoclamp holds chain securely as the grinding disc is lowered.
This fully adjustable, workshop quality model is robust enough to deal with prolonged use. The Ultra Chainmaster MK4’s many adjustable features means it able to sharpen 15° chains and a variety of different size chain pitch, making it suitable for a wide range of makes and sizes of chain. The integral LED work light helps you get the perfect cutting edge everytime.