Composite Instruments, Fig. SB..
Composite Instruments, Fig.1..
Composite Instruments, Fig.10..
Composite Instruments, Fig.10H..
Composite Instruments, Fig.2..
Composite Instruments, Fig.3..
Composite Instruments, Fig.4..
Composite Instruments, Fig.5..
Felt, Composite Instruments, Fig.1..
Felt, Composite Instruments, Fig.2..
Felt, Composite Instruments, Fig.3..
Felt, Composite Instruments, Fig.4..
Felt, Composite Instruments, Fig.5..
Felt, Composite Instruments, Fig.6..