The mean roughness Ra matches the arithmetical mean of the absolute. values related to the profile deviation y within the reference length l. Max. profile valley depth Rmax (DIN 4768) The max. profile valley depth Rmax counts for the most significant single. roughness depths Zi within the total length lm.
Benefits. Every 500 Nectar points you redeem is Â£2.50 off your total, which means more money to spend on the goods you want. You can also save further Nectar points for each Argos purchase you make, simply by presenting your card at the checkout. Simply present your Nectar card at the till and the cashier will swipe your card to automatically deduct the points from your account (subject to system availability). 2  Any remaining balance will need to be paid in full by cash, debit or credit card on the day.
No, you cannot use On Business points on anything other than reward flights and cabin upgrades. You can join the British Airways Executive Club for free to earn a number of travel benefits, including lounge access for Silver and Gold Members and free seat choice for all Members.he Company Authoriser and Programme Administrator(s) can spend the company's points on: 1  reward flights (flights purchased with On Business points). 2  cabin upgrades. 3  American Airlines, British Airways and Iberia, giving you great service on an extensive network of flights.