This is a rare vintage Irvinware Automatic Trip-Jigger from 1971. Still in original box. Does not appear to have been used and if so, very little. One little tear in box you can see in the pics.

It is made of stainless steel and you place the Trip-Jigger on the glass, pour your liquor into it and the Trip-Jigger will automatically tip over, pouring the contents into the glass when the capacity is reached.

18/8 stainless steel and Irvinware are on the bottom.

This jigger is 5 1/2" in length and a little over 3 1/4" in diameter.