It is a resonant quartz crystal strain gauge with a bourdon tube force collector. Differential pressure can be measured by gauges containing two different Bourdon tubes, with connecting linkages. Shinoda founded Linkin Park with Rob Bourdon and Brad Delson in 1996. Its first President was the French reporter Georges Bourdon. This is an analog mechanical gauge, usually with a Bourdon tube mechanism. DJ/keyboardist Joe Hahn and drummer Rob Bourdon, all of whom are founding members. Blin de Bourdon, the co-foundress, was elected Superior General succeeding Saint Julie. There, drummer Rob Bourdon and Shinoda would record drums and percussion for the album. The wings were flapped by gunpowder charges activating a Bourdon tube. The Bartlett bells are hung in a circle around the bourdon bell "Great George". On 18 March Bourdon attacked the Commune and the Sans-culottes army. There is also another empty space where a second bourdon used to be. Several young persons offered themselves to assist the two superiors, Billiart and de Bourdon. Bourdon and Delson would form their own band, Relative Degree. The largest of the cathedral's bells, the bourdon, was not damaged.