Technical Data:
Internal gear tooth micrometer
Measure over-pin diameter of gears
Range: 100-505mm
Micrometer head: 100-115mm
Micrometer head accuracy: +/-4um
Graduation: 0.01mm
Points of extension rods are spring loaded
Extension rods: 15mm, 25mm, 50mm, 100mm, 200mm
Extension rod 15mm accuracy: +/-1um
Extension rod 25mm accuracy: +/-1.25um
Extension rod 30mm accuracy: +/-1.25um
Extension rod 50mm accuracy: +/-1.25um
Extension rod 100mm accuracy: +/-2um
Extension rod 200mm accuracy: +/-3.5um
Extension rod 400mm accuracy: +/-4.5um

Dimensions:
Micrometer head/body diameter references=dia.16mm; dia.18mm; dia.3mm
Drawing references=7mm; 14.5mm; 27mm
Extension rod diameter reference=dia.16.5mm

Remark:
Ball tips are optional: code 7383
Cylindrical tips are optional: code 7393
Supplied with manufacturer inspection certificate