STARRETT 187 Jobbers Drill Gage, 1/16 to 1/2 Inch Range

Starrett 187 jobbers drill gauge is a tool utilised in applications requiring precision drilling. This gauge facilitates the quick and accurate measurement of twist drill sizes.

Working Mechanism:

• Select a drill bit to be measured and insert it into the holes on the gauge.
• Slides the bit into the holes until you find the hole that offers the closest fit.
• Once the correct hole is found, clearly see the diameter measurement indicated by the hole. This measurement corresponds to the diameter of the drill bit being assessed.
• To ensure accuracy, check that the flutes or cutting edges of the drill bit align perfectly with the edges of the hole, verifying the correct size and alignment.
• Note down the size indicated by the hole. This measurement provides a precise value for the diameter of the drill bit.

Features:

• Starrett 187 jobbers drill gauge includes 29 holes, each labelled with the corresponding drill size in inches and their decimal equivalents to provide a visual representation of drill sizes that can be measured using the gauge.
• It features steel construction with matte finish for longevity and durability.
• This 187 jobbers drill gauge tool features markings on both sides. One side is steel stamped with drill size information, while the reverse side is marked in white for clear and quick reading.

Frequently Asked Questions:

Q. What is the advantage of both inch and decimal equivalents labelling on the gauge?

A. This feature provides flexibility for users who may be more comfortable working with either unit of measurement.

Q. How to maintain this drill gauge?

A. Keeping the gauge clean and free from debris will maintain its accuracy over time.