Figure 1 Schematic diagram o f t h e gyroscope Figure 2a Layout of the windings i n the experimental apparatus Connector forhelium transfer Rubber hose Lead-plated brass former | ^ M y lar Lead Lead-plated brass can ead connections SQUID F i g u r e 2b Cross s e c t i o n o f t h e e x p e r i m e n t a l apparatus F i g u r e 2d - R o t a t i n g t.he dewar and e x p e r i m e n t a l apparatus time Figure 3 Calibration of the instrument. Upper: flux 0 = 17.4 flux quanta applied to calibration c Lower: one flux quantum enters SQUID Run 7 OV APPLIED I 2V I -10 turns I I + 10 t u r n s 30 s 1 kV APPLIED +10 turns i 1 -11 t u r n s !V 30 s Figure 4 E f f e c t of r o t a t i n g the instrument. Upper: no voltage applied Lower: IkV applied Run figu£e_5 The c e n t r i f u g a l effect Run 3 Flux lump in SQUID 15 m i n (a) Run same scale as above 15 m i n (b) Figure 6 The d r i f t effect 6 Run •\ 4 \ \ \ \ •\ \ \ ~1 50 25 time a f t e r igure 7 helium transfer / hour V a r i a t i o n of d r i f t rate w i t h time gure 8 - Cross s e c t i o n o f m y l a r s t r i p s whose ends have been ] Figure 9. Schematic of the mercury potted rotation device