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Size: 20" x 26" heavy paper laminated
Overall Dimensions: 5" x 5" (12 cm x 12 cm)
Housefly Life Cycle: Explore the fascinating stages of a housefly's life with this educational specimen
Structural details include the major groove-minor groove of the double helix
Mounted on a pivot in a semi-median
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
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