A set of rulers to measure the tongue tie according to Kotlow classification. See for more information the page Tongue ties on this website.
To be able to measure the tong-tie in a good way, you need a grooved director or a liper device.
The grooved director is to be used to hold the tongue backwards and tighten the tongue tie, so you can assign the Kotlow classification with the Kotlow ruler.
To measure the SOB, calibrated 1 - 25 mm. Especially good to measure a larger SOB in combination with an open bite.
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