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This vintage inside spring caliper is an exceptional tool for machinists and anyone who needs precise measurements. Made by The L. S. Starrett Company in the United States, this caliper is a testament to their craftsmanship. It is a beloved collector's item for those in the tools, hardware, and locks community.

The caliper's unique design allows for easy adjustment and accurate measuring of inside dimensions. Its sturdy construction ensures that it will last for years to come. Whether you are a seasoned machinist or a collector, this inside spring caliper is a must-have item.