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Federal 230 - the tiny breadboard added is a voltage regulator so it works with the new batteries.
186: Federal 230 electronics and project
185: 1uF cap identification
184: Spline shaft project
183: Powder coating
182: My painter friend Troy says this is a good primer..
181: Federal 230 gage heads. Two 18650s should make a nice update for the power.
180: Vent that will extract for the fume hood.
179: This will be the table top for the fume hood.
178: Federal 230 gage heads
177: Federal 230 gage heads - Bench has aquired a maze like attitude.
188: Federal 230 Case with new batteries and connector
189: Federal 230 - There is supposed to be a post sticking up in the center of this picture - opposite the tab pointing down - limits the travel of the switch - someone forced it and broke it off.
190: Soldered a brass 3mm nut to replace the broken off tab.
191: Used my Russian 1um blocks to test the Federal 230
192: Tim saw an old Microchroma computer at a museum - same as my first computer..
193: Federal 230's all restored and working. Had to steal a zeroing pot from one of the old ones.
194: You can see the calibration network inside the 5-pin 240° shell
195: Truing up a DOM pipe for the chemistry hood project.
196: chemistry hood project - rings ready to weld.
197: Broken indicator lot - better shape than I thought - several just need a new crystal. I will bet that more than half are fixable.
