Layer Estimates:

Layer: A9 Pass of Birnam to Tay Crossing Extent (ID:0)
Count: 1
Extent:

XMin: 300333
YMin: 738927
XMax: 306600
YMax: 744201.199999999
Spatial Reference: 27700 (27700)

Layer: A9 Perth to Inverness (ID:1)
Count: 453
Extent:

XMin: 262527
YMin: 726127
XMax: 309769
YMax: 845590
Spatial Reference: 27700 (27700)