Hangkai film's Prescale™ Pressure indicating film is used to measure contact pressures as low as 0.87 psi up to pressures as high as 43,500 psi. When pressure is applied, tiny microbubbles burst within the film to show the various degrees of pressure, through color density, that corresponds to the pressure and pressure distribution. Features & Benefits of Prescale Film Affordable and easy to use One-time use Static pressure measurement Peak pressure snapshot