SIGHT BOOSTER DELUXE W/ CHANGEABLE LENS

Made in USA
SIGHT BOOSTER DELUXE WITH INTERCHANGEABLE LENS POWER
Len 3   Power: 1.75X.  Focus: 14 inches
Len 5   Power: 2.25X.   Focus: 8 inches
Len 7  Power: 2.75X. Focus: 6 inches