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The DM-25L Differential Micrometer provides sub-micron positioning combined with a coarse travel of 25 mm. The design incorporates a standard micrometer with a high-resolution micrometer built around it. Coarse positioning, provided by the knob at the end of the micrometer, enables rapid translation with a sensitivity of 1 μm. The fine adjustment knob, closest to the positioner, allows ultra-fine positioning over 0.2 mm of travel, with 0.1 μm sensitivity.
When manual resolution of much less than one micrometer is needed, a differential screw is recommended. A differential micrometer uses a spindle with two opposing screw threads of slightly differing pitches (P1 and P2). As the spindle rotates, the net travel of the micrometer tip is : 1/Peff = 1/P1 - 1/P2. This mechanism allows extremely small adjustments using commonly available screws.
The DM-L Series is the first actuator where both coarse and fine travel can be locked with a single knob. Coarse positioning enables rapid translation with a sensitivity of 1 µm while the fine adjustment knob allows ultra-fine positioning over 0.2 mm travel, with 0.1 µm sensitivity.
DM-L micrometers have the industry-standard 9.5 mm mounting interface making them both interchangeable with other micrometers and compatible with Newport stages and mounts like those listed below.
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|---|---|---|---|---|---|---|---|---|
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$726.00 |
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$323.00 |
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DMH-1 Digital Micrometer, 25.4 mm Travel, ±2 µm Accuracy | UNIVERSAL |
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$511.00 |
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| Compare | Description | Compatibility | Drawings, CAD & Specs | Avail. | Price | |||
|---|---|---|---|---|---|---|---|---|
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$245.00 |
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LTA-HL Motorized Actuator, High Load, 25 mm travel, LTA, M12 thread | UNIVERSAL |
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$2,564.00 |
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DM11-25 Differential Micrometer Head, 25.1 mm Coarse, 0.1 mm Fine, 6.6 lb. Load | UNIVERSAL |
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$555.00 |
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AJS100-1 Adjustment Screw, 100 TPI, 25.4 mm Travel, Small Knob, Side Lock | UNIVERSAL |
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$39.00 |
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DM-13L Lockable Differential Micrometer, 13 mm Coarse, 0.2 mm Fine, 11 lb. | UNIVERSAL |
In Stock
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$726.00 |
|
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DMH-1 Digital Micrometer, 25.4 mm Travel, ±2 µm Accuracy | UNIVERSAL |
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$511.00 |
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DM17-25 Differential Micrometer Head, 25.1 mm Coarse, 0.1 mm Fine, 11 lb. Load | UNIVERSAL |
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$781.00 |
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TRA25PPD Motorized Actuator, Miniature, 25mm Travel, Stepper, 25-pin D-Sub | UNIVERSAL |
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$1,133.00 |
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SM-25 Vernier Micrometer, 25 mm Travel, 23 lb. Load Capacity, 50.8 TPI | UNIVERSAL |
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$163.00 |
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TRA25CC Motorized Actuator, Miniature, 25 mm Travel, DC Servo Motor | UNIVERSAL |
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$1,133.00 |
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| Compare | Description | Compatibility | Drawings, CAD & Specs | Avail. | Price | |||
|---|---|---|---|---|---|---|---|---|
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426 Manual Linear Stage, Crossed-Roller Bearings, 1.0 in. Travel, 1/4-20 | IMPERIAL |
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$672.00 |
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423 Linear Stage, High-Performance, Low-Profile, 1.0 in. Travel, 1/4-20 | IMPERIAL |
In Stock
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$348.00 |
|
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460P-X X Linear Stage, Peg-Joining, 1.0 in. Travel, 8-32 and 1/4-20 Threads | IMPERIAL |
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$428.00 |
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462-X-M Manual Linear Stage, ULTRAlign, 25 mm, Crossed-Roller, 8-32 & 1/4-20 | IMPERIAL |
In Stock
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$906.00 |
|
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462-XYZ-M XYZ Linear Stage, ULTRAlign, 25 mm, Crossed-Roller, 8-32 & 1/4-20 | IMPERIAL |
In Stock
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$2,530.00 |
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