Lack of technological progress in late Roman Empire

[Eleatic Guest]

Next round. When were cross-bladed scissors, those with a joint, invented and how widespread were they vis-a-vis the type in the pic below?

One of the first recorded mentionings of cross-blade scissors, however, was in the Fifth Century. The scribe Isidore of Seville described a cross-bladed shear, with a center pivot, used by barbers and tailors. These scissors did not gain widespread use in Europe until the 1600's.

Short History of Scissors

Shear, Ancient Trebizond, northeastern asia Minor, 2nd century A.D., Bronze, Metropolitan Museum in New York City in 2006[/i]