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Large die measures 12cm
a super magnet
5" for option 3
produces warmth and helps recover fast
Size: 520mm x 290mm x 90mm
Mechanical Stopwatch Classroom Kit Large die measures 12cmIncluded: Stainless Steel Mechanical Stopwatch Metallic Balance Nickel Alloy Hairspring + Anchor escapement. Premium Quality: Stopwatch is made of high quality, heavy duty, stainless steel. Ideal craftmanship through and through. Can withstand high temperatures, mechanical & thermal shocks. 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
US$ 32.00
US$ 39.19
US$ 89.50
