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The Modular 4-channel DRO

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DRO:int4 is an interface kit that makes a flexible DRO (Digital Read-Out) out of an old PC and cheap Chinese digital scales or.
The DRO system can be used for a mill, a lathe or any tool machine that needs accurate positioning.
The interface connects through a serial connection (RS 232) to a PC or laptop that is used as a display.