Micrometric Compass with Quick Opening

These 3-piece calipers, with quick opening adjustment, were designed to perform geometric shapes with great precision. They have an easy and effective system to lock the rods, preventing them from slipping when in use.
The graphite tip can be replaced by an adapter, which allows you to attach a mechanical pencil or pen. They feature a nickel-plated finish and are available in 3-piece sets.

The 3-piece set contains: 1 compass (length: 170mm and diameter/aperture: 290mm), 1 extra lead and 1 adapter for pencil, mechanical pencil or pen.