用于检验没有台阶的光滑圆柱孔的专用量规， 一般都是成对使用；成对塞规中，一个叫通规， 用来控制孔的最小极限尺寸； 另一个叫止规，用于控制的最大极限尺寸； 检测圆柱孔时，若通规能通过被检孔， 而止规不能通过，被检孔尺寸合格。 加工公差符合DIN7162和DIN7164，公差等级H7。

Grenzlehrdorn H7, 23mm

底孔规 产品编号	底孔规 规格说明
655306000	Grenzlehrdorn H7, 2mm
655306001	Grenzlehrdorn H7, 2.5mm
655306002	Grenzlehrdorn H7, 3mm
655306003	Grenzlehrdorn H7, 3.5mm
655306004	Grenzlehrdorn, H7, 4mm
655306005	Grenzlehrdorn, H7, 5mm
655306006	Grenzlehrdorn, H7, 6mm
655306007	Grenzlehrdorn H7, 7mm
655306008	Grenzlehrdorn, H7, 8mm
655306009	Grenzlehrdorn H7, 9mm
655306010	Grenzlehrdorn, H7, 10mm
655306011	Grenzlehrdorn H7, 11mm
655306012	Grenzlehrdorn, H7, 12mm
655306013	Grenzlehrdorn, H7, 13mm
655306014	Grenzlehrdorn, H7, 14mm
655306015	Grenzlehrdorn, H7, 15mm
655306016	Grenzlehrdorn, H7, 16mm
655306017	Grenzlehrdorn, H7, 17mm
655306018	Grenzlehrdorn, H7, 18mm
655306019	Grenzlehrdorn, H7, 19mm
655306020	Grenzlehrdorn, H7, 20mm
655306021	Grenzlehrdorn H7, 21mm
655306022	Grenzlehrdorn, H7, 22mm
655306024	Grenzlehrdorn, H7, 24mm
655306025	Grenzlehrdorn, H7, 25mm
655306026	Grenzlehrdorn, H7, 26mm
655306027	Grenzlehrdorn, H7, 27mm
655306028	Grenzlehrdorn, H7, 28mm
655306030	Grenzlehrdorn, H7, 30mm
655306032	Grenzlehrdorn, H7, 32mm
655306034	Grenzlehrdorn, H7, 34mm
655306035	Grenzlehrdorn, H7, 35mm
655306036	Grenzlehrdorn, H7, 36mm
655306038	Grenzlehrdorn, H7, 38mm
655306040	Grenzlehrdorn, H7, 40mm
655306042	Grenzlehrdorn H7, 42mm
655306044	Grenzlehrdorn H7, 44mm
655306045	Grenzlehrdorn, H7, 45mm
655306046	Grenzlehrdorn H7, 46mm
655306048	Grenzlehrdorn, H7, 48mm
655306050	Grenzlehrdorn, H7, 50mm
655306052	Grenzlehrdorn, H7, 52mm
655306055	Grenzlehrdorn, H7, 55mm
655306060	Grenzlehrdorn, H7, 60mm
655306062	Grenzlehrdorn, H7, 62mm
655306065	Grenzlehrdorn, H7, 65mm
655306070	Grenzlehrdorn, H7, 70mm
655306072	Grenzlehrdorn H7, 72mm
655306075	Grenzlehrdorn, H7, 75mm
655306080	Grenzlehrdorn, H7, 80mm
655306085	Grenzlehrdorn, H7, 85mm
655306090	Grenzlehrdorn, H7, 90mm
655306095	Grenzlehrdorn H7, 95mm
655306100	Grenzlehrdorn, H7, 100mm