Easy-to-read Graduated knob models have

• an accurate lead screw and adjustable drive nut
• engraved knob and scale to measure travel and position to 0.001" (English models) or 0.01 mm (Metric models). How it works.

Accurate lead screw: these screws are calibrated to have a lead error of less than 0.0015"/10" length or 0.033 mm/20 cm length.

Adjustable drive nut: Except in the Series A15 (where space is not available), all drive nuts have an adjustment screw to minimize backlash.

Lithographed scales are marked in 0.025" or 1 mm increments. Maximum lengths are 36" and 1 meter. When ordering units longer than that, add a revolution counter.

Knobs come in 4 styles depending on lead screw pitch

	Lead Screw Pitch and Code	Divisions on Knob
	5 pitch (5 turns per inch or cm) Q2 and P5	200
	10 Pitch (10 turns per inch or cm) P10 and Q1	100
	20 Pitch (20 turns per inch) P20	50
	40 Pitch (40 turns per inch P40	25

Knobs come in 2 diameters

Series A15, A25, A40 use a	Series A60 and B90 What is a Series?
1 3/4" Diameter knob	use a 2 3/4" Diameter knob

Work around:
If the scale obscured or covered or the unit is used upside down,
use a revolution counter in place of the lithographed scale.
Below is an AXY table with Graduated Knob option.

or
Mount the scale on side edge. In this case the scale will be shipped loose so you can attach it where you want it. Attach your own index pointer to the slider carriage.This unit will be used upside down. Lock and hash mark on the
end bearing block have been relocated.

How it works

English Models	Metric Models
Read whole numbers and tenths from the index pointer and scale or revolution counter. Read thousandths, (each line = 0.001") from the graduated knob.	Read centimeters and millimeters from the index pointer and scale or revolution counter. Read hundredths of a millimeter from the graduated knob.

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