U-Tech 681

The U-Tech 681 is a transistor/diode curve tracer plug-in for 560-series scopes, introduced around 1968.

U-Tech 681
Curve tracer plug-in U-Tech 681 Compatible with 560-series scopes Produced from (?) to (?) Manuals U-Tech 681, 682, and 683 Manual with Patent and Bio (All manuals in PDF format unless noted otherwise)

Sister model U-Tech 682 is the same for 500-series scopes, and there was a standalone model 683.

Key Specifications