South Bend Full Catalog (lathes, milling machines, bandsaws, drill presses, surface grinders) Diatest Plug Gauge Technical Guide. Diatest SplitBall Probe Operating Guide. Diatest Plunger Probes. Diatron 1000 Data Sheet. Diatest TD Gauge Data Sheet. Diatest Snap Gauge. Diacator Data Sheet.