These colored coded stacking masses help children see mass relationships at a glance. Each color represents a different thickness and mass. Includes plastic storage box.

This set of 6 spring scales is a complete collection of spring scales with different range and sensitivities starting 250 grams up to 5000 grams.

Color coded spring scales included in this set are:

Color	Newtons	Grams
Blue:	0 N to 2.5 N	0 Grams to 250 grams
Green:	0 N to 5 N	0 Grams to 500 Grams
Brown:	0 N to 10 N	0 Grams to 1000 Grams
Red:	0 N to 20 N	0 Grams to 2000 Grams
White:	0 N to 30 N	0 Grams to 3000 Grams
Yellow:	0 N to 50 N	0 Grams to 5000 Grams

Newton units are used when you want to measure a force. Grams are used when you are measuring a weight. Each spring scale weighs about 56 grams and is about 20 cm long (not including the hanger and the hook). Package size is 3 x 3 x 23 centimeters.