Alvin Professional 4 1/2 Spring Blade Ruling Pen

This Alvin Professional Oval Nib Ruling Pen features a spring blade design for drawing consistent, yet easily adjustable lines with bottled ink or masking fluid. It has a thick plastic handle and durable nickel-plated tool steel nib that can stand up to heavy use. To adjust the line width, turn the screw on the side of the nib.

ALVIN Spring Blade Ruling Pen 4 1/2 inches Model 958

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Alvin 958 Professional 4 1/2 Spring Blade Ruling Pen

Fully assembled and equipped with features that would help you create an accurate drawings and drafts. Made with a white, aluminum straightedge, acrylic blade, and melamine top surface. Brake Mechanism - Straightedge has brake mechanisms on each end for secure, positive locking in any location on the board. Brakes keep straightedge from slipping or jumping if the board is jostled.

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