Instruments and sets BioniQ instrument set Gauges Gauges Depth gauges are used to accurately measure the depth of the bone bed preparation and can also be used as paralleling pins. The diameter of the gauge corresponds to the diameter of the final drill. Gingival height gauge (QR and QN platforms) Depth gauge S2.9 Depth gauge S3.5 Depth gauge S4.0/T4.0 Depth gauge S5.0/T5.0 Share Tweet Pin It