The original focus tool, developed to provide mechanical advantage on the "star handle" tilt-lock of a Century Leko (ellipsoidal reflector spotlight, to those under 45).
1973 Silver & Sons Theatrical Lighting Aluminum Wrench Stage Tech
https://img1.etsystatic.com/064/2/5211907/il_340x270.771978103_n8xz.jpg
A precursor to the Altman Wrench.
1973 Silver & Sons Theatrical Lighting Aluminum Wrench Stage Tech
https://img1.etsystatic.com/064/2/5211907/il_340x270.771978103_n8xz.jpg
A precursor to the Altman Wrench.