Linear Abraser 5750 - Contoured Surface Testing The TABER® Linear Abraser - Model 5750 [part# 985750] offers the greatest versatility of any Taber instrument available. Designed to test virtually any size or shape specimen, the Linear Abraser is ideal for material properties of contoured surfaces and finished products. Initially developed to evaluate wear resistance, this instrument can also be used to evaluate scratch resistance (single or multiple pass), color transfer [commonly referred to as crocking or a crockmeter], and perform coin scrape tests. Plus, with the universal or a custom attachment, 'real world' testing and other forms of material durability can be performed. The Linear Abraser can be used for both wet and dry testing.