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local function entity_settings_pasted(event)
    -- copy paste entity settings from one display to another
    local source = event.source
    local dest = event.destination
    if source and dest and source.valid and dest.valid then
        if (source.name == "SD1030" or source.name == "SD1050" or source.name == "SD1070") and (dest.name == "SD1030" or dest.name == "SD1050" or dest.name == "SD1070") then
            local display1
            local display2
            for i, display in ipairs(global.display) do
                if source == display.entity then
                    display1 = display
                end
                if dest == display.entity then
                    display2 = display
                end
            end

            display2.signal = display1.signal
            display2.units = display1.units
            display2.Kunits = display1.Kunits
            display2.percent = display1.percent
            display2.zero = display1.zero
            display2.scale = display1.scale
        end
    end
end

script.on_event(defines.events.on_entity_settings_pasted, entity_settings_pasted)