There are single-end and double-end measuring plugs. Plugs are seldom used for measuring grooves with the diameter below 15 mm. It’s quite the opposite for large holes measurements. In this case, often, one will inevitably have to use a measuring plug with several nozzles directed to different sides. A typical method for checking orifices having diameters of approximately 8 mm is also use of measuring plugs with outlet nozzles. In order to obtain precise measurement values for bushing and rod diameters, a measuring plug is worked out and fitted tightly into the bushing. In case there is no central surface on the workpiece, the central base notch must be made on the gauge to control the position of the plug. Low pressure devices are made with two or more scales for separate or simultaneous measurement of two or more sizes. Further, a measuring plug allows changing of the measurement range from 0.02 to 0.20 mm, as the range depends on the size of nozzles used on the tool.
| Name | Parameter | From | To | ГОСТ |
|---|---|---|---|---|
| Thread plugs with inserts with full thread profile | thread(М) | 6 | 100 | 17756-72 |
| Thread plugs with inserts with incomplete thread profile | thread(М) | 6 | 100 | 17757-72 |
| Thread plugs with inserts with incomplete thread profile | diameter (мм) | 6 | 52 | 17758-72 |
| Thread plugs with full thread profile | thread(М) | 52 | 100 | 17759-72 |
| Thread plugs with incomplete thread profile | thread(М) | 52 | 100 | 17760-72 |
| Sheet double-end plugs | diameter (мм) | 14 | 125 | 24961-81 |
| Splined go-on plugs with the diameter from | diameter (мм) | 102 | 125 | 24962-81 |
| Splined no-go plugs with incomplete profile with the diameter from | diameter (мм) | 102 | 125 | 24963-81 |
| Thread plugs with inserts with full profile for straight pipe thread | diameter (") | 1/8 | 4 | 24122-80 |
| Thread plugs with inserts with incomplete profile for straight pipe thread | diameter (") | 1/8 | 4 | 24123-80 |
| Double-end thread plugs with inserts for straight pipe thread | diameter (") | 1/8 | 1 1/2 | 24124-80 |
| Thread plugs with attachments with full thread profile for straight pipe thread | diameter (") | 1 3/4 | 3 3/4 | 24125-80 |
| Thread plugs with attachments with incomplete thread profile for straight pipe thread | diameter (") | 1 3/4 | 3 3/4 | 24126-80 |
| Thread plugs with full thread profile for straight pipe thread | diameter (") | 4 | 6 | 24127-80 |
| Thread plugs with incomplete thread profile for straight pipe thread | diameter (") | 4 | 6 | 24128-80 |