Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder - Magnetic Base Indicator Holders
STARRETTMagnetic Base Indicator Holders

STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder

The STARRETT Magnetic-Base Indicator Holder (MPN 657-2) is a magnetic-base indicator holder with an articulating arm. It features an On/Off Knob and a base size of 1-7/8 in L x 1.625 in W x 1-15/16 in H, with a…

SKU 3G-OTH-231450

Brand
STARRETT
Item
Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder
Category
Magnetic Base Indicator Holders
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

STARRETT
Manufacturer Part Number
657-2
Type
Articulating Arm
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

STARRETT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The STARRETT Magnetic-Base Indicator Holder (MPN 657-2) is a magnetic-base indicator holder with an articulating arm. It features an On/Off Knob and a base size of 1-7/8 in L x 1.625 in W x 1-15/16 in H, with a 1/4"-20 thread mount.

Frequently Asked Questions

What is the STARRETT Magnetic-Base Indicator Holder used for?

The STARRETT Magnetic-Base Indicator Holder (MPN 657-2) is used to securely mount dial indicators or test indicators on ferrous surfaces during precision measurement, machining setup, or quality inspection. Its articulating arm allows flexible positioning, while the magnetic base with On/Off Knob provides stable attachment to machine tables, V-blocks, or surface plates.

What are the specifications of the STARRETT 657-2 Magnetic-Base Indicator Holder?

The STARRETT 657-2 Magnetic-Base Indicator Holder has a base size of 1-7/8 in L x 1.625 in W x 1-15/16 in H, a 1/4"-20 thread mount, and an On/Off Knob for magnetic control. It features a magnetic base and an articulating arm for flexible indicator positioning. The manufacturer part number is 657-2.

Where to buy the STARRETT 657-2 Magnetic-Base Indicator Holder worldwide?

You can source the STARRETT 657-2 Magnetic-Base Indicator Holder through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine STARRETT products to procurement teams and engineers globally.

How to install the STARRETT Magnetic-Base Indicator Holder?

To install the STARRETT Magnetic-Base Indicator Holder, clean the ferrous mounting surface, then turn the On/Off Knob to the ON position to activate the magnetic base. Attach the base firmly to the surface. Mount your indicator to the 1/4"-20 threaded stud, then adjust the articulating arm to position the indicator tip against the workpiece. Turn the knob OFF to release.

Used in

Common applications for STARRETT
Structural steel fabrication — TENNAX™-PRO bi-metal band saw blades for cutting beams and channels
Stainless steel pipe cutting — Advanz™ CS carbide-tipped band saw blades for abrasive material
Aluminum extrusion cutting — Duratec™ SFB carbon steel band saw blades for soft metals
General metalworking maintenance — Intenss™ PRO-DIE high-speed steel band saw blades for mixed metals
Hard alloy tool steel cutting — Intenss™ PRO bi-metal band saw blades with hook edge
Wood and non-ferrous material sawing — Duratec™ SFB carbon steel blades for multi-material shops

STARRETT Products

3G Electric supplies STARRETT magnetic base indicator holders. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
STARRETT Mini Magnetic-Base Indicator Holder: Mini Magnetic-Base Indicator Holder, Magnetic Base (MPN 661). Key specifications — attr1184043: STARRETT; attr1200946: Mini Magnetic-Base Indicator Holder; attr1184013: 661; attr1184031: Always On; attr1184022: Magnetic; attr1184027: 1.18 in L x 1.18 in W x 1 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Mini Magnetic-Base Indicator Holder: Mini Magnetic-Base Indicator Holder, Magnetic Base (MPN 661). Key specifications — attr1184043: STARRETT; attr1200946: Mini Magnetic-Base Indicator Holder; attr1184013: 661; attr1184031: Always On; attr1184022: Magnetic; attr1184027: 1.18 in L x 1.18 in W x 1 in H; attr1184030: 1/4"-20.
STARRETT Magnetic Base Only: Magnetic Base Only, Magnetic Base, 1/4 in Compatible Indicator Mounts (MPN 657P). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic Base Only; attr1184013: 657P; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic Base Only: Magnetic Base Only, Magnetic Base, 1/4 in Compatible Indicator Mounts (MPN 657P). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic Base Only; attr1184013: 657P; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT Magnetic Base Only: Magnetic Base Only, Magnetic Base, 1/4 in Compatible Indicator Mounts (MPN 659P). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic Base Only; attr1184013: 659P; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 3 in L x 2.375 in W x 2.375 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic Base Only: Magnetic Base Only, Magnetic Base, 1/4 in Compatible Indicator Mounts (MPN 659P). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic Base Only; attr1184013: 659P; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 3 in L x 2.375 in W x 2.375 in H; attr1184030: 1/4"-20.
STARRETT Back Plunger Dial Indicator & Mag Base Set: 0 in to 0.2 in, Inch, Mechanical (MPN 657-650Z). Key specifications — attr1184168: 657-650Z; attr1184178: 0-100; attr1184223: STARRETT; attr1200883: Back Plunger Dial Indicator & Mag Base Set; attr1184177: +/- 0.001 in; attr1184208: Certificate of Inspection; attr1184179: Mechanical.
STARRETT
STARRETT Back Plunger Dial Indicator & Mag Base Set: 0 in to 0.2 in, Inch, Mechanical (MPN 657-650Z). Key specifications — attr1184168: 657-650Z; attr1184178: 0-100; attr1184223: STARRETT; attr1200883: Back Plunger Dial Indicator & Mag Base Set; attr1184177: +/- 0.001 in; attr1184208: Certificate of Inspection; attr1184179: Mechanical.

More from STARRETT

View all STARRETT parts →
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Flex Arm, Magnetic Base (MPN 657TW). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Base (FAB); attr1184013: 657TW; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Flex Arm, Magnetic Base (MPN 657TW). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Base (FAB); attr1184013: 657TW; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 659A). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Top (FAT); attr1184013: 659A; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 3 in L x 2.375 in W x 2.375 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 659A). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Top (FAT); attr1184013: 659A; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 3 in L x 2.375 in W x 2.375 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 657AA). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184013: 657AA; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 657AA). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184013: 657AA; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Flex Arm, Magnetic Base (MPN 657T). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184013: 657T; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Flex Arm, Magnetic Base (MPN 657T). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184013: 657T; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Articulating Arm (MPN 660). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Base (FAB); attr1184013: 660; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1.375 in L x 1.375 in W x 1.1875 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Articulating Arm (MPN 660). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Base (FAB); attr1184013: 660; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1.375 in L x 1.375 in W x 1.1875 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 657D). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184013: 657D; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 657D). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184013: 657D; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 659AZ). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Top (FAT); attr1184013: 659AZ; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 3 in L x 2.375 in W x 2.375 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 659AZ). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Top (FAT); attr1184013: 659AZ; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 3 in L x 2.375 in W x 2.375 in H; attr1184030: 1/4"-20.
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 657A). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Base (FAB); attr1184013: 657A; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.
STARRETT
STARRETT Magnetic-Base Indicator Holder: Magnetic-Base Indicator Holder, Rigid Arm, Magnetic Base (MPN 657A). Key specifications — attr1184043: STARRETT; attr1200946: Magnetic-Base Indicator Holder; attr1184025: Fine Adjust Base (FAB); attr1184013: 657A; attr1184031: On/Off Knob; attr1184022: Magnetic; attr1184027: 1-7/8 in L x 1.625 in W x 1-15/16 in H; attr1184030: 1/4"-20.