Gage Rod - 1/4" (6.3mm) x 6" (150mm), Accommodates 708, 709, 811 and 711F Series Dial Test Indicators and 657S Sleeve. 1/4" (6.3mm) diameter x 6" (150mm) long. Accommodates Starrett 708, 709, 811 and 711F Series Dial Test Indicators and 657S Sleeve. Rod.