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Comprehensive Kit: Explore mineral hardness with this Mohs Scale Hardness Tester
(6 x S Yellow Ball 2 Holes)
Reliable Measurement: This Stainless-Steel Meter Scale offers accurate and reliable measurements up to 50 meters
Thickness: 0
Relay 12 Volts Essential Kit Comprehensive Kit: Explore mineral hardnessIncludes: Relay 12V Essential Kit. Used in number of applications in laboratory, home, general purpose or games. Premium Quality: Kit is made of high quality, heavy duty and durable materials. Improved accuracy and robustness, and is less expensive than traditional relay buttons. Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design please
