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Dial Indicator

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Project developed by User:Patrick Gilland
This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been prototyped.

You can help Appropedia by contributing to the next step in this OSAT's status.


  1. A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.
  1. Picture of completed print using your printer

Bill of Materials

Part Quantity Source Comments
PLA ~XX grams Filament supplier of choice Color of choice
Dial Indicator Body 1 [/ Youmagine] Using PLA
Dial Indicator Top 1 [/ Youmagine] Using PLA
Spacer 3 [/ Youmagine] Using PLA
Dial Indicator Needle 1 [/ Youmagine] Using PLA
Gear 1-2 1 [/ Youmagine] Using PLA
Gear 3-4 1 [/ Youmagine] Using PLA
Gear 5-6 1 [/ Youmagine] Using PLA
Dial Indicator Plunger 1 [/ Youmagine] Using PLA
Gear 7 1 [/ Youmagine] Using PLA
1/8 Diameter Button Head Cap Screw 1 inch long 3
1/8 Diameter Button Head Cap Screw 1.25 inch long 1
1/8 Diameter Nylock Nut 4
1/8 Inner Diameter Washer 8


Tools needed for fabrication of the OSAT

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. Phillips head screw driver
  3. 5.5 mm wrench


Skills and Knowledge Necessary to Make the OSAT

  • 3D Printing Knowledge & Capabilities
  • Understand the needs & application for the most efficient customization

Technical Specifications and Assembly Instructions

  1. Customize & Print 2 copies of the Hemostats
  • It is recommended to print around 30 mm/s with a 100% infill
  1. Orient the two printed pieces so that:
    1. The holes align
    2. The finger holes of the prints are on opposite sides
    3. Locking wedges are pointing toward each other for proper engagement
  2. Insert bolt into hole. (Direction does not matter)
  3. Engage the nut onto the bolt.
  4. Tighten with very little force using a screw driver and a wrench. (Over tightening will the limit the ability of the hemostats.

Common Problems and Solutions

  • Make sure that the wedges that lock into each other are both wide enough and deep enough so that they do not break when you try and lock the Hemostats down.
  • Make sure the nut & bolt are loose enough to allow free movement of the hemostats.
  • Make sure the all of the pieces are thick enough as to not bend under forces (minimum of 4mm thickness is recommended)

Cost savings

  • 25g of PLA ($0.40 USD) + 3mm Nut ($0.13 USD) + 3mm x 12mm bolt ($0.33 USD) = $0.86 USD Total
  • Compared to $4.27 USD Cheapest Hemostats I Could Find
  • Cost savings of $3.41 USD (79.9% cost savings)
  • The biggest benefit is not cost, but availability when Amazon delivery is not an option in a remote or devastated area.

Benefited Internet Communities

Name and add links to at least 5 using single brackets around [url name]:


  • These hemostats were designed based on my own used of them

Bill of Materials

Tools Needed for Creation of OSAT

Skills and Knowledge Necessary to Create OSAT

Technical Specification and Assembly Instruction

Common Problems and Solutions

Cost Savings

Benefitted Communities