What is The diagonal scale is used to read dimensions?

What is The diagonal scale is used to read dimensions?

ڈائیگنل پیمانہ کیا ہے ڈائمینشنز کو پڑھنے کے لیے استعمال کیا جاتا ہے؟
Explanation

 The diagonal scale enhances measurement accuracy and ease

when dealing with various dimensions on maps and technical drawings.