Allen Gauge – 1221 External Buttress Three Dial Gauge

$2,190.00

Description

Allen Gauge and Tool Co.

1221 External Buttress Three Dial Gauge

Buttress Casing Form Gauge

The Three Dial gauge is a convenient working gauge for controlling the basic thread form on API buttress casing.

Their main role as a quick check of thread angles and tooth width during production help to control the manufacturing process and to evaluate incorrect or worn tooling.

Gauge Type:   External Three-Dial Gauge

Thread Type:  API External Buttress Casing 4 Ω~20″
Dial Type:         0-15-0, Balanced
Graduation:      0.0005″
Dial Travel:       1/8″

Description:

The 1221 Three Dial Gauge is used to check the thread form of API External Buttress Casing from 4-1/2~20″.

Possible problems that may arise in the thread flanks and tooth width are determined through readings of the three separate dials.

Indicator #1 contacts and measures the 10 Degree flank, while Indicators #2 & #3 contact and measure the straight portion of the 3 Degree flank.

When used in conjunction with the specific Buttress Segment, incorrect flank angle, flank shave and improper tooth width can be verified.

The use of a #1231-D Segment Base is required to properly “zero” your gauge.

This gauge is used to determine the discrepancies in the thread form that may require further investigation with the #3285 Allen Portable Optical Comparator.