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These micrometers are made for better precision measurement of LARGE outside dimensions. They provide perfect balance, sensitive feel, ease of handling, and less measuring effort due to their advanced tubular design. Frames are built of special steel formed to exacting tubular design specifications and welded by a carefully controlled process. This produces a hollow tubular frame of the lightest weight, extreme rigidity, and standard coefficient of expansion.
Because of the interchangeable anvils, the No. 724 Series is well suited for diversified gaging and provides a wide range of measurement in steps of 1 inch or 25 mm.
The micrometer head is large and well balanced with .300" (7.6 mm) diameter anvil and spindle and with larger bearing surfaces on the threads.
Readability Features
- Starrett satin chrome finish – no glare – resists rust
- Advanced sleeve design with staggered lines and distinct figures for precise and easy readability
- Large thimble diameter with distinct figures
Ease-of-Handling Features
- Balanced frame and thimble design for easy handling and better readability
- Ring-type knurled lock nut for quick and sure locking
Accuracy and Long-Life Features
- Hollow tubular frame design combining lightest possible weight with rigidity
- Extremely hard and stable one-piece spindle (the heart of our accuracy)
- Interchangeable anvils for diversified gaging
- Standards with insulated grips
- Micro-lapped measuring faces
- Quick and easy sleeve adjustment
- Starrett workmanship
It is recommended that these micrometers be checked with standards in the approximate position (vertical or horizontal) that they will be used.
We do not recommend .0001" or 0.001 mm readings on these micrometers.
- Larger sizes, carbide faces and ratchet stop are available on special order.
Tubular Bow Type Micrometers - No. 724, 724M Series
with interchangeable anvils and standards
Range: 12-60" (300-1500mm)
Range: 12-60"
| Catalog No. |
EDP No. |
Description |
List price |
| 724LZ-18 |
52994 |
12-18" Range, .001" Grad, with Lock Nut, in Case |
1,185.00 |
| 724LZ-24 |
52995 |
18-24" Range, .001" Grad, with Lock Nut, in Case |
1,279.00 |
| 724LZ-30 |
52996 |
24-30" Range, .001" Grad, with Lock Nut, in Case |
1,321.00 |
| 724LZ-36 |
52997 |
30-36" Range, .001" Grad, with Lock Nut, in Case |
1,412.00 |
| 724LZ-42 |
52998 |
36-42" Range, .001" Grad, with Lock Nut, in Case |
1,779.00 |
| 724LZ-48 |
52999 |
42-48" Range, .001" Grad, with Lock Nut, in Case |
2,003.00 |
| 724LZ-54 |
53000 |
48-54" Range, .001" Grad, with Lock Nut, in Case |
2,257.00 |
| 724LZ-60 |
53001 |
54-60" Range, .001" Grad, with Lock Nut, in Case |
2,619.00 |
Range 300 - 1500mm
| Catalog No. |
EDP No. |
Description |
List price |
| 724MLZ-450 |
64318 |
300-450mm Range, 0.01mm Grad, with Lock Nut, in Case |
1,185.00 |
| 724MLZ-600 |
64319 |
450-600mm Range, 0.01mm Grad, with Lock Nut, in Case |
1,279.00 |
| 724MLZ-750 |
64320 |
600-750mm Range, 0.01mm Grad, with Lock Nut, in Case |
1,321.00 |
| 724MLZ-900 |
64321 |
750-900mm Range, 0.01mm Grad, with Lock Nut, in Case |
1,412.00 |
| 724MLZ-1050 |
64322 |
900-1050mm Range, 0.01mm Grad, with Lock Nut, in Case |
1,779.00 |
| 724MLZ-1200 |
64323 |
1050-1200mm Range, 0.01mm Grad, with Lock Nut, in Case |
2,003.00 |
| 724MLZ-1350 |
64324 |
1200-1350mm Range, 0.01mm Grad, with Lock Nut, in Case |
2,257.00 |
| 724MLZ-1500 |
64325 |
1350-1500mm Range, 0.01mm Grad, with Lock Nut, in Case |
2,619.00 |
J.W. Donchin Co.
 Ph: 773-261-2182 • Fax: 773-261-2867 • Email: sales@jwdonchin.com
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