The grades of 3 Machinery stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Standex International Corporation’s (SXI) ratings are looking better this week, moving up to a B from last week’s C. Standex International Corporation manufactures a variety of products and services for various industrial market segments. For more information, get Portfolio Grader’s complete analysis of SXI stock.

Kadant Inc. (KAI) is seeing ratings go up from a B last week to a A this week. Kadant Inc. is a supplier of equipment used in the global papermaking and paper recycling industries. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of KAI stock.

Lydall, Inc. (LDL) shows solid improvement this week. The company’s rating rises from a B to a A. Lydall, Inc. develops and manufactures engineered materials for a variety of applications. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of LDL stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.