コマ博士・山崎詩郎先生監修第１弾のひとまきコマは、見た目からは重心が安定していない不安定なコマに見えますが、緻密な計算により算出された寸法、角度で加工する事により、コマを回した時は重心が中心になり、ブレが無く回転します。
山崎詩郎先生とバネを製造開発する五光発條(株)がコラボレーションした楽しいコマです。
●五光発條のコマ
「コマはろくろで木や鉄を削って作る物」
この概念を一気にふっとばし、１本のバネでコマを作るという、バネ会社が本気で作ったコマが登場です。
日本の技術、ものづくりの発想の豊かさが産んだ独楽。
面白い動きで子どもたちを楽しませるとともに、日本の技術の高さを実感してください。
サイズ：φ4.2×高2.2(cm)
重量：4g
材質：SUS304WPB（ステンレス鋼線）
※ゴム取手の色はアソートとなります。カラーが写真と異なる場合がありますので、ご了承ください。
| Product # | 20019364 |
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