/ Precision Measuring Tools / Precision Hand Tools / Indicators & Gages / Holders / 657C * Not actual product image 52747 657C Magnetic Base and Post Assembly with 196B1 Indicator, PT18718 Snug, 3 Contact Points, and Contact Point Adaptor 52747 Other similar products 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 Contact Starrett 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