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$4.13Each Real time qty checker Compare	Elma 21mm Black Potentiometer Knob, 040-4020 Knob Diameter21mm Knob Height5.4mm Body ColourBlack Indicator ColourBlack See similar products in Potentiometer Knobs	RS Stock No. 243-9586 Brand Elma Mfr. Part No. 040-4020
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$3.325 Each (In a Box of 100) Real time qty checker Compare	Elma 21mm Black Potentiometer Knob Cap, 040-4025 Knob Diameter21mm Knob Height5.4mm Body ColourBlack Indicator ColourBlack See similar products in Potentiometer Knobs	RS Stock No. 243-9587 Brand Elma Mfr. Part No. 040-4025
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$50.427 Each (In a Box of 10) Real time qty checker Compare	Elma 16 Pulse 2 bit Quadrature Mechanical Rotary Encoder with a 6 mm Slotted Shaft Pulses Per Revolution16 Shaft StyleSlotted Shaft Diameter6 mm Encoder Reading2 bit Quadrature Encoder SignalDigital Square Wave See similar products in Mechanical Rotary Encoders	RS Stock No. 241-2337 Brand Elma Mfr. Part No. E33-CT6C2-M01T
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