Accurate Instruments (NZ) Ltd.
192 Marua Road
Mt Wellington
Auckland

Clegg Impact testers have been the soil tester for compaction testing of roading for years, providing CIV values.

The Geotechnics Impact Tester (GIT) has been designed and built to conform with ASTM D -5874 - 95, which also relates
to other popular brand impact testers. This means that the Geotechnics Imapct Tester provides a suitable and cheaper alternative to commonplace impact testers.

The GIT works on the principle of a known mass falling a known distance. The results in the same impact energy on each
drop. The hammers reaction to the rebound is recorded on a digital readout on a scale of 0-100 IV (impact value).
Typical values would be around 30 - 50 IV for sub base materials, and up to 80 or more for base course layers on
Transit highways.

Some cheaper imitation brands from Europe don't have correlation to an 'inferred CBR' which is a very useful feature
when designing some projects. By working from a design CBR, the user can calculate a target IV for the material.
This helps to fine tune the compaction process.

It comes complete with a rugged transit case, a full calibration, and a 'test-ring' which can be determine performance
on a daily basis.