This vintage Pickett Model APC-10 adjustable triangle is a must-have for any collector or professional in the field of engineering and surveying. With its impeccable construction and precision, this professional quality tool is a testament to the craftsmanship of the past. Designed with the utmost attention to detail, this adjustable triangle is a testament to the ingenuity and innovation of the time. The Pickett Model APC-10 is a truly unique piece of history that is sure to impress any collector or professional in the field.