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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2
9 numbered samples
Powder-free
and watch in wonder as the sparks fly
Wooden storage box to protect the kit
high precision
145mm Giant Large Sand Timer Connector 9 numbered samples145mm tall, large sand timer 80mm square base (top and bottom) prevents rolling. 30 seconds has the time value embossed on the top. Large Sand Timer 30 seconds also has Blue Color coded grains of sand. Excellent for classroom projects and purposes, Group projects, educational purposes, laboratory demonstration. If you need custom order with different sizes design, please contact us. Safely Packaged to avoid being damaged during transportation.
