原装美国TABER S-34锌板，S-34标准锌板
S-34标准锌板 NEMA 标准板， 0.032" ，锌， 1/4" 孔， 5 片。
S34 Zinc Standardization Plates are used to evaluate the abrasion characteristics of S-42 and S-33 sandpaper strips. Each plate is 4” square, .032” zinc with ¼” center hole. (5 pcs.)
