Universal ratchet ALPA

• Constructed entirely of hardened stainless steel
• 4 x 90° graduation, accuracy ± 1′
• 1° reading on the nonius in the centre of the instrument
• Magnifying glass, and 1′ (1/60°) on the nonius of the micrometer
• Patented system of automatic unblocking-unblocking of the rotation, with simple pressure on the micrometer
• Patented system of unblocking-unblocking of the movable scale supplied with 90° stainless steel recognition square, 1 x 150 mm scale and 1 x 300 mm scale
• An instrument of extraordinary precision, practicality, simplicity and reliability
• Can be considered the most accurate mechanical goniometer on the market