Mitutoyo Series 323 Disc Micrometer

Measures “root tangent length” of spur gears and helical gears.
Determination of the root tangent length: refer to “Quick Guide to Precision Measuring Instruments”.
Equipped with Ratchet Stop for constant measuring force.

Metric

Code No.	Range (mm)	Resolution (mm)	Maximum permissible error JMPE (μm)	Flatness (μm)	Parallelism (μm)	Anvil dia. (mm)	Measurable module
With SPC data output
323-250-30	0 – 25	0.001	±4	1	4	Ø20	0.5 – 6
323-251-30	25 – 50		±4		4
323-252-30	50 – 75		±6		6
323-253-30	75 – 100		±6		6

Inch/Metric

Code No.	Range (in)	Resolution (mm)	Maximum permissible error JMPE (in)	Flatness (in)	Parallelism (in)	Anvil dia. (in)	Measurable module
With SPC data output
323-350-30	0 – 1	0.00005 in/ 0.001 mm	±0.0002	0.00004	0.0002	Ø7.787	0.5 – 6
323-351-30	1 – 2		±0.0002		0.0002
323-352-30	2 – 3		±0.0003		0.0003
323-353-30	3 – 4		±0.0003		0.0003

Power source: SR44 battery (1 pc.), 938882 included as standard (for operational checks)
Battery life: Approx. 2.4 years under normal use
Position detection method: Electromagnetic rotary sensor
Standard accessories: Setting standard, 1 pc. (except tor measuring range 0 to 25mm (0 to 1 in) models), Spanner 301336), 1 pc.
Note 1: Root tangent length measurement is not available for some types of gears.
Note 2: For functional details, refer to page 02-7.
Optional connection cable is available only for water-proof type (Digimatic model).

Measures “root tangent length” of spur gears and helical gears.
Determination of the root tangent length: refer to “Quick Guide to Precision Measuring
Instruments”.
Equipped with Ratchet Stop for constant measuring force.