• Seasoned Hardwood Arms - Features arms made from durable seasoned hardwood to provide enhanced stability and longevity. This model features 30 ratios.
• Chromed Steel Components - All hardware and components are extra heavy-duty, such as pivot screws, tracing point, lead holder, and support pin are made of chromed steel to prevent rust and corrosion.
• Stable and Precise - Includes table clamp and four spare leads to ensure stability and precision so each project is accurate and consistent.
• Available Sizes and Ratios - Available in three different sizes with various sets of ratios to accomidate any project or job.
• A Professional's Choice - Alvin has been the professional's choice for drafting tools and drawing supplies for over half a century. We are known for our wide selection of high quality tools at a fair price.

Proudly Made in Taiwan