Electronic Match Output

Number:4a

Maker:Alro PTT Decibel
PHOTO

Type:Electronic

Length: ⌀ 12 cm

Circular:Y

Special Scales in Well:N

Special Scales on Stock:Y

Gauge Marks:N

Scales Front:N² N = dB

Scales Back:L/C N² N = N N² ν λ

Info: David Rance Collection