difference in principle of working
that optical square is more accurate than prism square
that no adjustment is required in a prism square since the angle between the reflecting surfaces cannot be changed
all of the above
Discuss in Comment
"Scientists dream about doing great things. Engineers do them."
PSC Advertisement ⏩ | Federal PSC | Bagmati PSC | PSC Karnali | PSC Lumbini | PSC Sudurpaschim | PSC Gandaki | PSC State 1.