Post Office Box

Post Office Box

Post Office Box

Post Office Box – Physics Laboratory Equipment

• Post office box is education quality & Standard quality.
• Brass block, plug type, having 3 pairs of ratio coils, 10, 100, 1000 ohms and 16 series coil constant wire.
• All plugs are interchangeable with accuracy 0.1%
• Constant coil standard teak box ½” 3 ratio.
• And with managing coils ½” blocks.
• Most superior brass block 9/16” manganian coils.

Available in coils –

• With 3 ratio coils.
• With 4 ratio coils