Certified Instrument Specialist (CIS) Practice Exam 2026 - Free CIS Practice Questions and Study Guide

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What is unique about cross action clamps?

Their shafts are straight and rigid

Their shafts cross-over halfway down

Cross action clamps are characterized by their unique design where the shafts cross over each other halfway down. This design allows for a more versatile application, providing better grip and control over the material being clamped. The crossing mechanism enables the clamp to apply pressure from two directions, ensuring a secure hold on the workpiece. This is particularly useful in various woodworking and metalworking applications, where precision and stability are crucial.

The other options present descriptions that do not accurately reflect the defining features of cross action clamps. The mention of straight and rigid shafts pertains more to conventional clamps, while the idea that they only come in one size is not accurate as cross action clamps can be found in various sizes and configurations. Adjustable lengths, while a feature in some clamp types, is not a defining aspect of cross action clamps specifically.

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They only come in one size

They have adjustable lengths

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