Depth Micrometers
SERIES 329, 229, 129 – Interchangeable Rod Type
FEATURES
·         Ø4mm (.157” DIA.) interchangeable rods, with lapped measuring end, provide
a wide measuring range.
·         The rod length can be adjusted in 25mm (1”) increments.
·         With Ratchet Stop for consistent force.
·         Crisp clear graduations on the thimble.
·         The 329 series (LCD readout type) are provided with SPC output.
·         The 229 series are provided with a mechanical digit counter for quick and
error-free reading.
·         Complete with fitted carrying case.
SPECIFICATIONS
Accuracy
·         Accuracy of micrometer head: +/-3µm (.00015”)
Excluding quantizing error. (329 series)
·         Flatness of reference face:
1.3 µm (.00005”) for base with 63.5mm (2.5”) width
2 µm (.00008”) for base with 101.6mm (4”) width
·         Flatness of measuring face of rod : 0.3 µm (.000012”)
·         Parallelism between reference face and measuring face:
(4+L/50) µm [(.00016+.00004 (L/2))”]*
* L=Maximum measuring length (mm)[(inch)], Fraction rounded up
·         Accuracy of interchangeable rod:
+/-(2+L/75) µm [+/-(.0001+.00005 (L/3))”]*
* L= Maximum measuring length (mm) [(inch)], Fraction rounded up
Metric
Range	Order No.		Graduation		Dimensions of reference face	Remarks
0-50 mm	129-109		0.01 mm		63.5x16 mm	with 2 rods
	129-113		0.01 mm		101.6x16 mm	with 2 rods
0-75 mm	129-110		0.01 mm		63.5x16 mm	with 3 rods
	129-114		0.01 mm		101.6x16 mm	with 3 rods
0-100 mm	129-111		0.01 mm		63.5x16 mm	with 4 rods
	129-115		0.01 mm		101.6x16 mm	with 4 rods
0-150 mm	129-112		0.01 mm		63.5x16 mm	with 6 rods
	129-116		0.01 mm		101.6x16 mm	with 6 rods