SERIES 368 Holtest 3 Point Internal Micrometer
 
Measurement applications
With 3 equally spaced anvils accurate alignment within a bore ensures consistent diameter measurements.

Series 368 Imperial Holtest sets
No.RangeRing GaugePrice
368-921-10 0.275-0.5" 177-179 dia. 0.35"/177-180 dia 0.5" £723.00
368-995 0.5-0.8" 177-182 dia. 0.65" £499.00
368-996 0.8-2" 177-184 dia. 1" / 177-291 dia. 1.6" £1220.00
368-997 2-4" 177-315 dia. 2.5" / 177-319 dia. 3.5" £1810.00
368-998 4-8" 177-299 dia. 5"/177-303 dia. 7" £2480.00
Features
• 3 point contact (Self centering)
• Contact Points are made of hardened alloyed steel
• Can be fitted with extension rods for deeper holes
• Boxed sets are also supplied with extension Rod (100 or 150mm), Spanner and Hex-Wrench
• Clear graduations on satin chrome finish
Accuracy
6-20mm 2µm/0.0001"
20-100mm 3µm/0.00015"
100-300mm 5µm/0.0002"
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