letters
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Do you want to comment on any of the stories in Commercial Motor? Does someone in the industry deserve a pat on the back—or a public dressing down? Or is there simply something you want to say to our readers? Don't keep it to yourself —drop us a line at CM Letters, Rm H203, Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. Alternatively, you can fax your letter to us on 0181 652 8969 or e-mail it to Miles.Brignall@rbi.co.uk Letters may be edited for length and do not necessarily represent the views of the editor.
Accuracy testing
Referring to the letters from Reg C E'plett (CM 1-7 May) and Geoff Morritt (CM 15-21 May) regarding chart accuracy. It would appear that charts have been compared for accuracy in a pile by lining up the hours. Any attempt to determine accuracy in this way will show time discrepancies because it is impossible to perfectly line up the centre boss without using a specialised piece of equipment designed for this purpose. Tachodisc is authorised by the Department of Transport to manufacture discs to the legal standard. Production is subject to strict surveillance by the VCA and BSI, and accuracy is checked daily in-house using advanced measuring equipment, calibrated to EEC legislation 382/85.
Tachodisc's manufacturing process prevents any discrepancy outside legal tolerances.
Tachodisc, Warrington.