X,.. yV (J / <3 J)aU 



Mctvhijic. HeeL 

 Tibvti^ C&r.-^ _ Depth > 



Shot or lead " 



Botioni . - i / ' . - ■ 



Jfo, of thcrjiimiieter ' / , Cor^ — ' 



Corrects Um^perature ' - " , 



a/ / Surface^ JDrif^ 



