Manual Lathes. From the toolroom to machines capable of turning 3500mm diameter by upto 12,000mm between centres. The manual lathe is still one of the most used machines in any workshop. For over 40 years, RK International Machine Tools has enjoyed a relationship with 600UK offering the Colchester and Harrison lathes. For larger capacities, Italian manufacturer COMEV provides exceptional quality machines with spindle bores up to 320mm.