Sema – Quick Set Bow Compass

LECTURER RECOMMENDED FOR CHARTWORK

New developed knee-joints

The new developed clamp mechanism gives a higher stability to the knee-joint, especially if you use an universal adaptor or extension bar.

2 metal levers

The rapid adjustment can be done by the 2 metal levers. The fine adjustment can be done by using the center-wheel.

Set contains:

• spare leads

Technical details:

• interchangeable lead and needle insert (pivot: Ø 4.0mm)
• lead and needle holders are made of metal
• length: 170mm
• maximum circle diameter: 300mm