Nostalgic Kits Central

Heathkit Test Equipment Matrix

GDOs

Codes
= Picture
= Specifications
= Calibration
= Block Diagrams
-  = No data

Model Number Description Notes Picture Specs Info Docs 1st Year Last Year
GD-1 Grid Dip Meter - - - - 52 52
GD-1A Grid Dip Meter Schematic - - - 53 53
GD-1B Grid Dip Meter 2-250 mHz Extra low-frequency coils available - Schematic - 53 60
HD-1250 Solid State Dip Meter Replaces GD-1B - Schematic - - 75 91
HM-10 Tunnel-Dipper - - - - - 61 62
HM-10A Tunnel-Dipper Schematic - - - 62 70
Tunnel Dipper - - - - - - - -