Mechanical Stopwatch 2 x pair of sand

2 x pair of sand blocks

this spherometer features a brass disc with 100 graduated divisions

The kit includes illustrated teaching notes describing the use of the kit as:

The rods are strategically placed for clear observation and comparison of conductivity levels

Silicified Wood

Mechanical Stopwatch 2 x pair of sandIncluded: 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