Layer Estimates:

Layer: Mock Perimeter - Points (ID:0)
Count: 15
Extent:

XMin: -13362139.2923428
YMin: 4765528.28431984
XMax: -13331390.8184595
YMax: 4808874.48997749
Spatial Reference: 102100 (3857)

Layer: Mock Perimeter - Lines (ID:1)
Count: 1
Extent:

XMin: -13362139.0251
YMin: 4765671.50086572
XMax: -13330841.4173804
YMax: 4798840.12575402
Spatial Reference: 102100 (3857)

Layer: Mock Perimeter - Polygons (ID:2)
Count: 1
Extent:

XMin: -20037507.8427882
YMin: -30240971.4583861
XMax: 20037507.8427882
YMax: 30240971.4583861
Spatial Reference: 102100 (3857)