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These are the most popular inside micrometers because of their lightness, ease of use, and range. They are very useful for measuring inside diameters of cylinders and rings, measuring parallel surfaces, etc.
The desired range is obtained by assembling rods and spacing gages to the micrometer head. Measuring rods are provided with a shoulder that is set accurately in the micrometer head and locked in position. When assembling rods to the A and B heads, the reading line on the micrometer head should be lined up with the marking on each rod (except for the 2-3" and the 50-75 mm rods).
Rod diameters are approximately 1/4" (6 mm) on the A and B sizes, and approximately 11/32" (8.5 mm) on the C size. Each rod has individual length adjustment for the anvil by means of special wrenches furnished.
- Measuring rods are solid and assembled on one side of the micrometer head
- Rods are insulated
- Each rod marked with length
- Hardened and ground anvils on rods, adjustable for length. Head anvil is hardened and ground
- Quick-reading figures – every thousandth numbered on Inch reading tools
- A 6 1/2" (165 mm) long convenient handle is available to provide reach for use in deep holes. Handle screws into the micrometer head in place of the dummy screw, which is opposite a rod lock screw
Solid-Rod Inside Micrometers
No. 124 Series Sets - Range: 2-32"
No. 124M Series Sets - Range: 50-800mm
Range: 2-32"
| Catalog No. |
EDP No. |
Description |
List Price |
| 124A |
50540 |
2-8” Range, .001” Grad, 6 Measuring Rods |
159.00 |
| 124AZ |
50542 |
2-8” Range, .001” Grad, 6 Measuring Rods with Case |
185.00 |
| 124B |
50544 |
2-12” Range, .001” Grad, 10 Measuring Rods |
193.00 |
| 124BZ |
50546 |
2-12” Range, .001” Grad, 10 Measuring Rods with Case |
225.00 |
| 124C |
50548 |
8-32” Range, .001” Grad, 4 Measuring Rods |
349.00 |
| 124CZ |
50550 |
8-32” Range, .001” Grad, 4 Measuring Rods with Case |
409.00 |
| 124D |
50552 |
2-32” Range, .001” Grad, 124A/124C Rods |
511.00 |
| 124DZ |
50554 |
2-32” Range, .001” Grad, 124A/124C Rods with Case |
581.00 |
| H124A/B |
50557 |
Micrometer Head for 124A / 124B |
58.00 |
| H124C |
50558 |
Micrometer Head for 124C |
113.00 |
| PT01579 |
70200 |
1/2” Gage fits 124A/124B |
7.50 |
Range: 50-800mm
| Catalog No. |
EDP No. |
Description |
List Price |
| 124MA |
50541 |
50-200mm Range, 0.01mm Grad, 6 Measuring Rods |
159.00 |
| 124MAZ |
56141 |
50-200mm Range, 0.01mm Grad, 6 Measuring Rods with Case |
185.00 |
| 124MB |
50545 |
50-300mm, 0.01mm Grad, 10 Measuring Rods |
193.00 |
| 124MBZ |
56142 |
50-300mm, 0.01mm Grad, 10 Measuring Rods with Case |
225.00 |
| 124MC |
50549 |
200-800mm, 0.01mm Grad, 4 Measuring Rods |
349.00 |
| 124MCZ |
56143 |
200-800mm, 0.01mm Grad, 4 Measuring Rods with Case |
409.00 |
| 124MD |
50553 |
50-800mm, 0.01mm Grad, 124MA/134MC Rods |
511.00 |
| 124MDZ |
56144 |
50-800mm, 0.01mm Grad, 124MA/134MC Rods with Case |
581.00 |
| 124H |
50556 |
Handle for Nos. 124A/124B/124D and 124MA/124MB/124MD |
9.60 |
| H124MA/MB |
56793 |
Micrometer Head for 124MA / 124MB |
58.00 |
J.W. Donchin Co.
 Ph: 773-261-2182 • Fax: 773-261-2867 • Email: sales@jwdonchin.com
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