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VintageStarrett No. 490 Combination Square Protractor Head.
More information about VintageStarrett No. 490 Combination Square Protractor Head.
Starrett No. 490 Combination Square Protractor Head. It is a tool used for measuring angles and is part of a combination square set, which typically includes a blade, square head, center head, and protractor head.
Key features of the Starrett No. 490 Protractor Head:
Material: Made of cast iron or forged and hardened steel.
Function: Measures angles from 0 to 180 degrees.
Reversible: The blade can be inserted in two orientations, allowing for measurements on both sides of the protractor.
Locking Knob: Features a locking knob to secure the blade at a specific angle.
Spirit Level: a few models include a spirit level for accurate horizontal measurements.
Origin: Manufactured by L.S. Starrett in Athol, Massachusetts.
This protractor head is often used in woodworking, metalworking, and other precision layout tasks. It is designed to be accurate and resilient, with a focus on quality and precision.
Key features of the Starrett No. 490 Protractor Head:
Material: Made of cast iron or forged and hardened steel.
Function: Measures angles from 0 to 180 degrees.
Reversible: The blade can be inserted in two orientations, allowing for measurements on both sides of the protractor.
Locking Knob: Features a locking knob to secure the blade at a specific angle.
Spirit Level: a few models include a spirit level for accurate horizontal measurements.
Origin: Manufactured by L.S. Starrett in Athol, Massachusetts.
This protractor head is often used in woodworking, metalworking, and other precision layout tasks. It is designed to be accurate and resilient, with a focus on quality and precision.
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