var instance = new Vintasoft.Twain.WebTwainDeviceJS(deviceName, productFamily, manufacturer, driverVersion, twainVersion, deviceManager, is64Bit);

var value; // Type: Vintasoft.Twain.WebUnitOfMeasureEnumJS
value = instance.get_UnitOfMeasure();

function get_UnitOfMeasure() : WebUnitOfMeasureEnumJS;

Return Value

This property sends a synchronous request to get value of WebDeviceCapabilityIdEnumJS.IUnits capability. If you want to use asynchronous request instead of synchronous request, please get information about WebDeviceCapabilityIdEnumJS.IUnits capability using WebTwainDeviceJS.getCapabilityAsync or WebTwainDeviceJS.getCapabilitiesAsync function.

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members