Hello Sir:(posted 7991 days ago)I own a GretagMacbeth Densitometer Sales and Service Dealership. We used to work on the ESECO Speedmaster Universal Densitometer. We also repair the Macbeth and Xrite Densitometer.
I do not have a service manual for the Eseco but I would be happy to answer any service questions via email or telephone. We also have many rebuilt densitometers such as the Xrite 301. Sam Coniglio coniglio@gte.net 818-352-0135
Best Regards............. Sam Coniglio