Drying time Recorder

Used to measure the drying time of film and putty film, with four different radii of the needle (R 0.25/0 5/1.0/1.5mm), the needle track is round, the period is 24 hours. The sample size is 200 × 200 × (0.2~ 3) mm, accurate measurement of film drying state

The number of strokes is 4, the size of the strokes is R 0.25/0 5/1.0/1.5mm, the stroke is φ 100mm, the track period is 6/12/24 h/T, the execution standard GB/T1728-79, and the measurement error is +/- 0.5%.