Mechanical Stopwatch Size: 20" x 26" heavy

Size: 20" x 26" heavy paper laminated

and a time resolution ranging from Auto 0

Mounted on a pivot in a semi-median

Features a detailed view of all 23 human chromosome pairs

Mechanical Stopwatch Size: 20" x 26" heavyMechanical 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