Velmex offers many ways to measure travel. 
I need to measure travel to ...click one of these

0.025" or 1 mm

0.01" or 0.1 mm

0.001" or 0.05 mm

more than that

Once you have chosen a Type, choose a Series for complete details such as drawing, load capacity etc.

Resolution	UniSlide Type	Travel measured by:
0.025"  or 1 mm	Screw Drive UniSlide with optional lithograph scale and index pointer attached. Show model sizes and travels	Lithographed Scale (Ruler)

Resolution	UniSlide Type	Travel measured by:
0.01"  or 0.1 mm	Screw Drive UniSlide with Mechanical Revolution counter (DRO) attached to lead screw. More Details Show Screw Drive Model sizes and travels	Revolution counter

Resolution	UniSlide Type	Travel measured by:
0.001"  or 0.05 mm	Screw Drive UniSlide with Scale/Vernier Show model sizes and travels	Precision Scale and Vernier
0.001"  or 0.01 mm	Graduated Knob UniSlide, one our most popular design. Engraved Knob with precision grade lead screw More details Show model sizes and travels
	Rotary Encoder attached to extended lead screw shaft and connected to remote display or I/O. More Details
	Rapid Advance UniSlide with Micrometer Head More Details
	BiSlide Only	Travel measured by:
	Mechanical Counter Spec a manual BiSlide with revolution counter

Resolution	UniSlide Type	Travel measured by:
5 or 1 microns 0.00025" or 0.00005"	ACU-Rite linear encoder mounted on Screw Drive UniSlide or TA Rapid Advance UniSlide More Details

Once you have chosen a type, choose a Series for complete details such as drawing, load capacity etc. If you know the Series, see Spec It for model and prices. (c) 2007. Velmex, Inc.