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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.
187: Federal 230 Case with new batteries and connector
186: Federal 230 - the tiny breadboard added is a voltage regulator so it works with the new batteries.
185: Federal 230 electronics and project
184: 1uF cap identification
183: Spline shaft project
182: Powder coating
181: My painter friend Troy says this is a good primer..
180: Federal 230 gage heads. Two 18650s should make a nice update for the power.
179: Vent that will extract for the fume hood.
178: This will be the table top for the fume hood.
189: Soldered a brass 3mm nut to replace the broken off tab.
190: Used my Russian 1um blocks to test the Federal 230
191: Federal 230's all restored and working. Had to steal a zeroing pot from one of the old ones.
192: You can see the calibration network inside the 5-pin 240° shell
193: Truing up a DOM pipe for the chemistry hood project.
194: chemistry hood project - rings ready to weld.
195: Broken indicator lot - better shape than I thought - several just need a new crystal. I will bet that more than half are fixable.
196: chemistry hood project -
197: chemistry hood project - welding finished - fixing a work-stool for Nikolaus
198: chemistry hood project - I used fence posts for legs - the small ring reinforces and provides a foot.
