Archimede HR is a digital electronic instrument developed for the accurate measurement of large diameters. The diameter measure is obtained starting from the α angle determined by the three cylindrical contacts (two fixed and one rotating) tangent on the object to be measured. The instrument accuracy varies according to the diameter range, which itself changes according to the measured sine angle.

The digital display shows: the diameter value or the α angle value and the battery charge status. Archimede instrument is provided with an USB output for data transmission to a PC through dedicated software (inclusive); it is supplied in a practical ABS anti-shock suitcase, with the User Manual and a battery charger.