Starrett 657C magnetic base and post assembly includes a 196B1 indicator, PT18718 snug, three contact points, and a contact point adaptor. The base measures 1-15/16 in L x 1-5/8 in W x 1-7/8 in H with a 6-1/52 in upright post. This accessory provides a stable mounting solution for precision measurement setups.

The Starrett 657A Magnetic Indicator Holder Set is put together for your ordering convenience, but you can mix and match other Starrett test or back-plunger indicators and attachments with the 657A Magnetic Base and Swivel Post Assembly to suit your needs. Base/Post Assembly with 196B1/PT18718/Points/Adapter.

Features

• Three precision ground magnetic contact surfaces (plus V-step)
• Powerful, permanent magnetic base holds firmly to steel or iron surfaces - horizontally, vertically, upside down
• The swivel post assembly on these holders provides universal adjustment in both horizontal and vertical planes
• Rectangular base
• 2 in arm length
• 5/16 in Dia arm