function get-monitorsize {
Get-WmiObject -Namespace root\wmi -Class WmiMonitorBasicDisplayParams |
select  @{N="Computer"; E={$_.__SERVER}},
InstanceName,
@{N="Horizonal"; E={[System.Math]::Round(($_.MaxHorizontalImageSize/2.54), 2)}},
@{N="Vertical"; E={[System.Math]::Round(($_.MaxVerticalImageSize/2.54), 2)}},
@{N="Size";
E={[System.Math]::Round(([System.Math]::Sqrt([System.Math]::Pow($_.MaxHorizontalImageSize, 2) `
+ [System.Math]::Pow($_.MaxVerticalImageSize, 2))/2.54),2)}}
}
get-monitorsize
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