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The Starrett 440, 445 Vernier Depth Gauges, Ratchet Stop, Lock Nut, Micrometer Type, Inch, depending on the model, have a measurement range of 0 to 3", 0 to 6", 0 to 9", or 0 to 12"; a resolution (or smallest graduation interval) of 0.001"; with + or – 0.0001" of accuracy. The vernier scale enables precise measurements in fine units. These gauges include 1/8" diameter measuring rods to cover the intended range. The bases are available in a choice of 2.5", 3", 4", or 6" long, and all measuring surfaces of these units are hardened, ground, and lapped for durability and accuracy. These gauges have a ring-type knurled lock nut, ratchet, and speeder for stability and to apply uniform pressure and make quick adjustments for precise measurements. These units include a protective case. Depth gauges are typically used in manufacturing, machining, and mechanical engineering.
Depth gauges are precision measuring instruments used to determine the depth of any shape that has a step, groove, or slot. These gauges often take the form of sliders that travel on a measuring beam or rods, are moved to position by hand, and then adjusted with a calibrated screw. The base of the gauge rests at the top of the shape whose recession is to be measured, while the beam or rods extend to the bottom of the recession to determine the measurement. Gauge position is read from a graduated scale, dial, counters, or an electronic display.
The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company, founded in 1880, is headquartered in Athol, MA.
Robert Mitchell
2025-07-18 18:02:09
The product was in excellent condition, and it arrived in a matter of days
Clayton
2025-07-03 18:39:31
The lock seems to randomly rub the stem. This leads to inaccurate measurements at times. Seems like a second or less quality version. My other Sterrett micrometers are of a much better quality.
Christopher England
2025-06-09 15:25:30
What can I say? When you buy something and immediately put it to use without anything remarkable or noticeable happening, that may seem a bit dull and not worth commentary. But with measuring tools, I think that's exactly what you want. Expectations met. 5 Stars.
Kyle K.
2025-05-14 11:37:30
After using it every day for 4 year is still as accurate as the day it was first used.
David Knuth
2025-03-31 11:44:47
Works flawlessly, high quality, and precise, living up to the quality and history that Starrett carries in the machining industry.
Donald Ivemeyer
2025-01-14 18:31:28
Great product of precision quality1
La monte
2024-12-19 12:27:34
Excellent deal!!!!!
Tony Benavides
2024-12-18 12:27:44
This is an excellent set that I've already used a few times for my gunsmithing business. It's an invaluable tool. I highly recommend.Tony.
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