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.
You can earn: 1  1 Nectar point for every Â£1 qualifying spend* instore/online from 00:00 on 11 April 2015. 2  1 Nectar point for every litre of fuel purchased in Sainsburyâs fuel stations.3  Nectar points are calculated on your transaction total, thatâs after any discounts.f you lose your card, report it immediately to the Nectar Helpline on 0344 811 0 811, between 8am-8pm, Monday to Friday, and 9am-5pm on Saturday and Sunday. For further queries, please visit nectar.com or call Nectar on 0344 811 0 811.