Certainly makes the Sark 100 more versatile as now you can test and tune the antenna at point of erection. (N.B. you may have to change the connecting plug as the Sark 100 connectors vary )
Fitted precisely in my Sark 100, had to cut the connector plug off and solder it to the leads on the analyser. If you do this I advise you to insulate both leads with heatshrink and insulating tape.