A speed square has many obvious uses for marking up your building materials. Here's a small hidden feature you may not know about: it can also draw perfect circles. Most speed squares have a notch at ...

丸い円を正確に描きたい時はコンパスなどの道具を使う必要がありフリーハンドで一発で描くのは至難の業。フリーハンドで丸い円をどれだけ正確に描けるかをスコア化して競うことができるサービスが「Draw a Perfect Circle」です。 Draw a Perfect Circleにアクセス ...

STEP 1: Using a pencil and ruler, draw a horizontal line. Set the compass to the width of the line. Place the compass at either end of the line and draw two arcs that cross in the middle. Image ...

Forbes contributors publish independent expert analyses and insights. Barry Collins is a tech journalist writing about PCs, Macs and games. We’ve all been in shades of lockdown for months, it’s the ...