Octonet has developed specialist techniques for conducting rapid appraisals of the value of plant and machinery for large organization, providing clients with a detailed survey and depreciation model of several £1m worth of assets within short periods. This is achieved by carrying out an in-depth on-site investigation of a statistically-significant random sample of major and minor assets, the results of which are fed into a data model for the entire portfolio so that trend-based projections for the non-surveyed assets can be calculated. These results are then tested further by comparing the modelled outcome for a particular asset with its actual condition so that confidence in the integrity of the whole exercise can be assured.