A small piece of wood is usually used on these type calls as a striker. Some used slate strikers and the directions would often say can be used on gunstock, too. Tom Gaskin sold a ton of his "stopper calls"--same type call, different version. Here's a similar one depicted in Davis' classic, The American Wild Turkey. Top drawing, right corner, call in use. Bottom left hand corner, chalking lip. I like to hold the call between thumb and second finger in left hand and strike with striker in right hand, held between thumb and second finger. Some strike with call and hold striker still.:
