Mechanical Stopwatch Ideally suited to woodblocks and

Ideally suited to woodblocks and tambours

Ideal for ages 4 to 8 years

Premium Quality: Magdeburg Hemisphere is made of high-grade construction all the way through

Ideal for Education: Perfect for student experiments

there is a degassing effect to ensure the clean of mobile phase

Mechanical Stopwatch Ideally suited to woodblocks andMechanical Stopwatch. Start Stop Reset Function can be operated by the crown. Manual winding 13 Ruby. Case: chrome plated metal. Measuring range 15 minutes. Resolution: 1 10 second. Diameter: 5 cm. Premium Quality: Mechinal Stopwatch is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional laboratories but is an ideal choice for science classrooms and