Heathkit GD-1B Grid Dip Meter w/ 4 Coils untested VINTAGE TEST EQUIPMENT

Heathkit Grid Dip Meter Model GD-1B, High Frequency Oscillator UNTESTED

Heathkit GD-1B Heathkit Grid Dip Meter Model GD-1B Untested

Heathkit Grid Dip Meter Model GD-1B

Heathkit Grid Dip Meter Model GD-1B Vintage

Vintage Heathkit Assembly Manual GD-1B Grid Dip Meter Original 1956

Heathkit Grid Dip Meter Model GD-1B

Tool Steel Troubleshooter, Bethlehem Steel Pub 1981 New Paperback 151 pgs w/Pics