Home › Blog › Buying Guide › What Do Buyers Look for Before Investing in a Pre-Owned, Used, Secondhand, Surplus CNC Equipment Before Purchase TRENS SN 50 C Universal Lathe Here is a detailed checklist and guidance for what buyers should inspect and verify before purchasing a pre-owned / used / surplus universal lathe such as a TOS / Trens SN 50 C (or similar model)....