Drying Time Measuring Instrument

Drying Time Measuring Instrument is designed for measuring the drying time of coating, which applied on paper or metallic panel.

Principal: -A ballpoint is travel on the wet film at a const speed. This speed is proportional to time piece (watch) mechanism. This ballpoint leaves the traveling path on the film. When the coating film start drying it become harder slowly. At this junction the ball get lifted above the dry film and shows the rubbing path on film. After completion of one circle of ballpoint observed the ballpoint path. Mark the starting point and the point of rubbing action, which indicate the drying point.
Least Count: -The least count will be different for every model.
( 1) For example: -A model having 12 minutes one revolution.
Least count: -1 division (natural 1 min) mark on gauge =12 second.
( 2) For a model having 6 hours one revolution
Least count: -1 division (natural 1 min) mark gauge = 6 min