Densimeters for Different Construction Range Automatic read & pick counter in grey & plain weaves.Used to read fabric construction with Perspex glass unbreakable on parabola formation basis.Ranges available 20-90 TPI, 40-110 TPI, 50-120 TPI, 100-170 TPI, & 170-240 TPI.[Our Instrument comes with Calibration certificate traceable to NPL / NABL, Warranty certificate and detailed user manual].