GAUGE CRYSTALS

INSIST ON G-S – THE ORIGINAL – STILL THE BEST

G-S stocks flat and domed gauge crystals in many diameters, which are used as replacement crystals when an instrument is being repaired and/or calibrated.

Click here to view a list of popular gauge and instrument brands and models and their corresponding G-S crystals.

A sampling of these popular brands are:

  • Chicago Dial

  • Standard

  • Federal

  • Starrett

  • Ames

  • Interapid

  • Brown & Sharpe

  • Mitutoyo

If your gauge or instrument does not appear on this list, please call or email us with the diameter required (preferably in millimeters). We can supply a flat window (W style) or a domed (PKH style) window to fit your instrument. The chart below lists standard W style windows that are stocked in our warehouse.

 STOCK “W” MICON ROUND, FLAT WINDOWS PDF

“W” style crystals not in stock may be ordered in industrial quantities. Minimum quantities and setup charges may apply. Please contact us for more information.

CUSTOM MANUFACTURING

See Custom Manufacturing information for more information, or contact us with your engineering drawing.

Stock windows and crystals for gauge and instrument repair:

   
G-S Item ID   
   
Description   
   
PK   
   
Domed—Round 8.4mm to G-S size PK 37
   (8.4mm to 36.2mm). Available in 1/4 sizes to PK 30   
   
PKH   
   
Domed—Round G-S size PKH 37-1/2 to 70
   (36.5mm to 57.1mm). Available in 1/2 sizes   
   
BS 579-2   
   
Brown & Sharpe (35.4mm)   
   
BS 7030-3   
   
Brown & Sharpe (27.6mm)   
   
BS 7031-3   
   
Brown & Sharpe (37.2mm)   
   
ST 5798   
   
Use low-domed mineral glass LMG 35.8 or 35.9mm   
   
ST 7112-Old   
   
ST 7112-Old style Starrett   
   
2228-B   
   
ST 7112 -New Style – Use PHD 16-3/4   
   
2156   
   
Ames 200—Old (55.0mm)   
   
2174   
   
Ames 300—Old (67.8mm)   
   
2640   
   
INT 102 (36.0mm)   

H-1 HAND INSERTER SET

H-1 Set.jpg
  • The H-1 Set is used for fitting crystals and windows for dial indicators, gauges, instruments and watches.

  • This set includes the G-S Hand Press, 10 blocks and 6 plugs for fitting crystals by compression, for crystals ranging from 8.4mm to 50.8mm (2″). See below for a list of blocks and plugs that are included in the H-1 Set.

  • The blocks and plugs may also be purchased individually.

  • Extra large blocks and plugs may be purchased separately. Please contact us for more information.

  • Click here for detailed directions on how to use the G-S hand press and instructions on selecting and fitting gauge crystals.

G-S Blocks Description Inches Millimeters Use Plug Size
X007 11.5mm – 2-3/4 .45” – .57” 11.55mm – 14.4mm HP5038 – #5
X008 3 – 10 .58” – .75” 14.6mm – 19.0mm HPO5037 – #4
X009 11 – 16 .78” – .90” 1937mm – 22.9mm HP5033 – #0
X010 17 – 22 .93” – 1.05” 23.5mm – 26.7mm HP5036 – #3
X011 23 – 28 1.08” – 1.20” 27.3mm – 30.5mm HP5036 – #3
X012 29 – 34 1.23” – 1.35” 31.1mm – 34.3mm HP5035 – #2
X013 35 – 40 1.38” – 1.50” 24.9mm – 38.1mm HP5035 – #2
X014 41 – 46 1.53” – 1.65” 38.7mm – 41.9mm HP5034 – #1
X015 47 – 52 1.68” – 1.80” 42.6mm – 45.7mm HP5034 – #1
X016 53 – 58 1.83” – 1.95” 46.4mm – 49.5mm HP5034 – #1