This method described in EN933-4 measures the ratio of length to width of individual aggregate particles using a vernier calliper and a specially designed 3:1 length gauge.
Designed to measure the ratio of length to width of individual aggregate particles. ...
Vernier callipers 200 x 0.002mm. Graduated in mm and inches. Gives four types of readings: inside, outside, depth and step. Dual reading scale (metric and inch) with 14° bevelled vernier scale for reduced parallax reading error and knurled locking nut. Manufactured from hardened stainless steel for rigidity. Satin finish. Conforms to DIN 862. ...
Dual measuring range highly accurate vernier caliper 0 to 200mm x 0.01mm (8 inch x 0.001 inch). Complete with liquid crystal display. Complies to EN 933-4. ...
