Retracting Indicator Holder: This spring loaded handle option allows the probe to easly enter the bore.
Depth Extension: For bores with diameters larger than 8.2mm, a depth extension can be added to increase the measurement depth, up to 1000mm. Extensions greater than 80mm in length are temperature stabilized.
Right Angle Attachment: This attachment is screwed between the holder and the probe. This is best for measuring part features where clearance is limited.
Rotary Adapter: This attachment is screwed between the holder and the probe. This is best for measuring roundness, because the probe is rotated while the indicator is stationary.
Depth Stop: This attachment is best when measuring a bore at a specific depth is desired. When using a depth stop, it is not necessary to find the reversal point.