Nain design silk rug back image

This picture shows the back of 260 lines hand-made Nain design silk rug z185276. The knots are very clear and dense. There are 22 lines of
knots per inch and there are 470real tied double knots per square inch (470KPI).
For this quality hand-knotted silk rug, each person can make
around 2.25 square feet per month.