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PART # DESCRIPTION SIZE PRICE SALE PRICE
54-866-005 Fowler Electronic Micrometers 4-5-Inch|100-125mm
Regular price

$370.00

$333.00 Sale
$333.00
54-866-004 Fowler Electronic Micrometers 3-4-Inch|75-100mm
Regular price

$331.00

$252.00 Sale
$252.00
54-866-003 Fowler Electronic Micrometers 2-3-Inch|50-75mm
Regular price

$298.00

$230.00 Sale
$230.00
54-866-002 Fowler Electronic Micrometers 1-2-Inch|25-50mm
Regular price

$258.00

$198.00 Sale
$198.00
54-860-012 Fowler Electronic Micrometers 11-12-Inch|275-300
Regular price

$344.00

$309.00 Sale
$309.00
54-860-011 Fowler Electronic Micrometers 10-11-Inch|250-275
Regular price

$308.00

$277.00 Sale
$277.00
54-860-010 Fowler Electronic Micrometers 9-10-Inch|200-250m
Regular price

$278.00

$250.00 Sale
$250.00
54-860-009 Fowler Electronic Micrometers 8-9-Inch|200-225mm
Regular price

$259.00

$233.00 Sale
$233.00
54-860-008 Fowler Electronic Micrometers 7-8-Inch|175-200mm
Regular price

$262.00

$236.00 Sale
$236.00
54-860-007 Fowler Electronic Micrometers 6-7-Inch|150-175mm
Regular price

$244.00

$220.00 Sale
$220.00
54-860-006 Fowler Electronic Micrometers 5-6-Inch|125-150mm
Regular price

$234.00

$210.00 Sale
$210.00
54-860-005 Fowler Electronic Micrometers 4-5-Inch|100-125mm
Regular price

$208.00

$187.00 Sale
$187.00
54-860-004 Fowler Electronic Micrometers 3-4-Inch|75-100mm
Regular price

$178.00

$160.00 Sale
$160.00
54-860-003 Fowler Electronic Micrometers 2-3-Inch|50-75mm
Regular price

$153.00

$138.00 Sale
$138.00
54-860-002 Fowler Electronic Micrometers 1-2-Inch|25-50mm
Regular price

$143.00

$98.00 Sale
$98.00
54-815-067 Fowler Electronic Micrometers 0-1.2-Inch|0-30mm-
Regular price

$574.00

$516.00 Sale
$516.00
54-210-210 Fowler Electronic Micrometers 0-2-Inch|50mm
Regular price

$1,323.00

$1,190.00 Sale
$1,190.00
54-210-200 Fowler Electronic Micrometers 0-2-Inch|50mm
Regular price

$1,197.00

$1,077.00 Sale
$1,077.00
54-210-110 Fowler Electronic Micrometers 0-1-Inch|25mm
Regular price

$942.00

$852.00 Sale
$852.00
54-210-100 Fowler Electronic Micrometers 0-1-Inch|25mm
Regular price

$921.00

$829.00 Sale
$829.00
54-860-276 Fowler Electronic Micrometers 1-2-Inch
Regular price

$261.00

$235.00 Sale
$235.00
54-860-275 Fowler Electronic Micrometers .2-1.2-Inch
Regular price

$241.00

$216.00 Sale
$216.00
54-245-780 Fowler Electronic Micrometers 1.25-2.50-Inch-(30mm
Regular price

$1,463.00

$1,317.00 Sale
$1,317.00
54-817-778 Fowler Electronic Micrometers 1-2-Inch-(25-50mm)
Regular price

$380.00

$342.00 Sale
$342.00
54-817-777 Fowler Electronic Micrometers 0-1-Inch(0-25mm)-
Regular price

$334.00

$300.00 Sale
$300.00
54-860-302 Fowler Electronic Micrometers 1-2-Inch|50mm
Regular price

$281.00

$252.00 Sale
$252.00
54-860-301 Fowler Electronic Micrometers 0-1-Inch|25mm
Regular price

$261.00

$235.00 Sale
$235.00
54-860-244 Fowler Electronic Micrometers 3-4-Inch|100mm
Regular price

$314.00

$283.00 Sale
$283.00
54-860-243 Fowler Electronic Micrometers 2-3-Inch|75mm
Regular price

$300.00

$270.00 Sale
$270.00
54-860-242 Fowler Electronic Micrometers 1-2-Inch|50mm
Regular price

$287.00

$259.00 Sale
$259.00
54-860-241 Fowler Electronic Micrometers 0-1-Inch|25mm
Regular price

$265.00

$238.00 Sale
$238.00
54-866-006 Fowler Electronic Micrometers 5-6-Inch|125-150mm
Regular price

$375.00

$338.00 Sale
$338.00
54-860-612 Fowler Electronic Micrometers 6-12-Inch
Regular price

$1,699.00

$1,529.00 Sale
$1,529.00
54-860-112 Fowler Electronic Micrometers 0-12-Inch
Regular price

$2,713.00

$2,441.00 Sale
$2,441.00
54-860-106 Fowler Electronic Micrometers 0-6-Inch
Regular price

$1,013.00

$911.00 Sale
$911.00
54-860-104 Fowler Electronic Micrometers 0-4-Inch
Regular price

$667.00

$599.00 Sale
$599.00
54-860-103 Fowler Electronic Micrometers 0-3-Inch
Regular price

$405.00

$275.00 Sale
$275.00
54-860-001 Fowler Electronic Micrometers 0-1-Inch|0-25mm
Regular price

$123.00

$86.00 Sale
$86.00
54-815-001-2 Fowler Electronic Micrometers 0-1-Inch|25mm
Regular price

$162.00

$108.00 Sale
$108.00
54-866-001 Fowler Electronic Micrometers 0-1-Inch|0-25mm
Regular price

$198.00

$153.00 Sale
$153.00

A micrometer sometimes known as a micrometer screw gauge, is a device used widely in mechanical engineering and machining for precisely measuring, along with other metrological instruments such as dial calipers and vernier calipers. Micrometers are often, but not always, in the form of calipers.

There are five common types of micrometers; the names are based on their application:

  • Outside micrometer- (aka micrometer caliper), typically used to measure wires, spheres, shafts and blocks.
  • 3-pt contact with tungsten carbide measuring anvils above .5" (12.5mm)
  • Inside micrometer- used to measure the diameter of holes
  • Depth micrometer- measures depths of slots and steps.
  • Bore micrometer- a 3 -anvil head on a micrometer base used to accurately measure inside diameters.
  • Tube micrometer- used to measure the thickness of tubes.

Inch system

The spindle of an inch-system micrometer has 40 threads per inch, so that one turn moves the spindle axially 0.025 inch (1 ÷ 40 = 0.025), equal to the distance between two graduations on the frame. The 25 graduations on the thimble allow the 0.025 inch to be further divided, so that turning the thimble through one division moves the spindle axially 0.001 inch (0.025 ÷ 25 = 0.001). Thus, the reading is given by the number of whole divisions that are visible on the scale of the frame, multiplied by 25 (the number of thousandths of an inch that each division represents), plus the number of that division on the thimble which coincides with the axial zero line on the frame. The result will be the diameter expressed in thousandths of an inch. As the numbers 1, 2, 3, etc., appear below every fourth sub-division on the frame, indicating hundreds of thousandths, the reading can easily be taken mentally.

Metric system

The spindle of an ordinary metric micrometer has 2 threads per millimeter, and thus one complete revolution moves the spindle through a distance of 0.5 millimeter. The longitudinal line on the frame is graduated with 1 millimeter divisions and 0.5 millimeter subdivisions. The thimble has 50 graduations, each being 0.01 millimeter (one-hundredth of a millimeter). Thus, the reading is given by the number of millimeter divisions visible on the scale of the sleeve plus the particular division on the thimble which coincides with the axial line on the sleeve.

Vernier

Some micrometers are provided with a vernier scale on the sleeve in addition to the regular graduations. These permit measurements within 0.001 millimeter to be made on metric micrometers, or 0.0001 inches on inch-system micrometers. The additional digit of these micrometers is obtained by finding the line on the sleeve vernier scale which exactly coincides with one on the thimble. The number of this coinciding vernier line represents the additional digit.