Seating & Wheelchair Angles It is important for the clinician to properly assess and document angular body measures and angular support surface measures when evaluating a client for seating and wheeled mobility equipment. As referenced in Clinical Application Guide to Standardized Wheelchair Seating Measures of the Body and Seating Support Surfaces, Revised Edition (Waugh & Crane, 2013), angular measurements can be measured in relative and absolute angles. It is important to utilize the angular body measures when recommending support surface measures. 2/15/2019 Keep Reading