Calculation of Plastic Spacer in a Single Crossover, which has all but 18 SLAB calculation of SLAB is divided into 9 equal quantity by both left and right here (2 @ 9 SLAB)
Plastic Spacer Single Crossover calculation in which all but 18 SLAB 9 SLAB calculated by dividing the same amount on both the left and right hands (2 @ 9 SLAB).
Calculate Plastic Spacer in Single Crossover which are all 18 SLAB but calculation is divided into 9 SLAB. By the same amount of both the left and the right hand (2@9 SLAB).