In the written terminology of various arts and trades, where two or more dimensionsof the same piece or article are to be stated, this letter Is a well-known symbolequivalent to the word "by." Thus, the for-Qmula "3 x 5 in." will be understood, or may be explained by parol evidence, to mean"three by five inches," that is, measuring three inches in oue direction and five inanother. See J aqua v. Witham & A. Co., 106 Iud. 547, H 7 N, E, 314.