Gomel Special-Purpose Tools and Industrial Equipment Works produces splined plug gauges and ring gauges for control of spline connections with straight-sided and involute profiles.
Gauge parts, which have operating surfaces, are made of the following steel grades SHH15 or SHH15SG as per GOST 801 or H, HVG as per GOST 5950-73. Work surface hardness - 58...64 HRC (standardized). Tolerances for gauges for square-sided spline connections are made according to GOST 7951-80, for involute connections – according to GOST 24969-81.
