G8 Vernier Comparative Caliper

This Vernier Comparative Caliper for “Comparing Distances” Graduated in both millimeters and 1/32”, 6” (152mm) long, with 5-3/8” (137mm) capacity, this device is an economical wonder when it comes to simple machine work, like tenons, tone holes and sockets. Your “sense of feel” can be more accurate than you need to be. For comparing distances that are to be the same, you can use these inexpensive calipers and compare the “tension” between the trombone slide rails or tubes. The measurement doesn’t matter as long as the distance between them is the same, “measured” by your good “sense of feel.” Check alignment of trombone slides, tuning slides and other parallel dimensions.
G8 Vernier Comparative Caliper

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