Visual Oil Analysis Directory

ESCO Single-Piece Oil Sight Glass

Premium, Acrylic, Single-Piece Oil Sight GlassDimensionsPart #
1oz, 1/4" NPT 1.75" OD, 3.5" L SPOSG1X250
1oz, 3/8" NPT 1.75" OD, 3.5" L SPOSG1X375
1oz, 1/2" NPT 1.75" OD, 3.5" L SPOSG1X500
1oz, 3/4" NPT 1.75" OD, 3.5" L SPOSG1X750
3oz, 1/4" NPT 2.25" OD, 4.25" L SPOSG3X250
3oz, 3/8" NPT 2.25" OD, 4.25" L SPOSG3X375
3oz, 1/2" NPT 2.25" OD, 4.25" L SPOSG3X500
3oz, 3/4" NPT 2.25" OD, 4.25" L SPOSG3X750

Des-Case Oil Sight Glass

Polyamide Oil Sight GlassesDimensionsPart #
1oz, 1/4" NPT 1.75" OD, 4" L DC-OSG1X250
1oz, 3/8" NPT 1.75" OD, 4" L DC-OSG1X375
1oz, 1/2" NPT 1.75" OD, 4" L DC-OSG1X500
3oz, 1/4" NPT 2.50" OD, 4" L DC-OSG3X250
3oz, 3/8" NPT 2.50" OD, 4" L DC-OSG3X375
3oz, 1/2" NPT 2.50" OD, 4" L DC-OSG3X500


Oil Sight Glass & Level Monitor

Large Volume Oil Sight GlassDimensionsPart #
3” Oil Height, 3/8” NPT 1.75” OD OSGL3
Dual Port, 3” Oil Height, 3/8” NPT 1.75” OD OSGL3DP
6” Oil Height, 3/8” NPT 1.75” OD OSGL6
Dual Port, 6” Oil Height, 3/8” NP/t 1.75” OD OSGL6DP
9” Oil Height, 3/8” NPT 1.75” OD OSGL9
Dual Port, 9” Oil Height, 3/8” NPT 1.75” OD OSGL9DP
12” Oil Height, 3/8” NPT 1.75” OD OSGL12
Dual Port, 12” Oil Height, 3/8” NPT 1.75” OD OSGL12DP
15” Oil Height, 3/8” NPT 1.75” OD OSGL15
Dual Port, 15” Oil Height, 3/8” NPT 1.75” OD OSGL15DP
18” Oil Height, 3/8” NPT 1.75” OD OSGL18
Dual Port ,18” Oil Height, 3/8” NPT 1.75” OD OSGL18DP
24” Oil Height, 3/8” NPT 1.75” OD OSGL24
Dual Port, 24” Oil Height, 3/8” NPT 1.75” OD OSGL24DP

3D Bullseye (Standard)

3-D BullsEye SizesDimensionsPart #
1/4" NPT 1.00" OD, 1.375" L 3DB0250
3/8" NPT 1.125" OD, 1.375" L 3DB0375
1/2" NPT 0.875" OD, 1" L 3DB0500
3/4" NPT 1.125" OD, 1.375" L 3DB0750
1" NPT 1.375" OD, 1.375" L 3DB1000
1 1/4" NPT 1.75" OD, 1.375" L 3DB1250
1 1/2" NPT 2" OD, 1.375" L 3DB1500
2" NPT 2.50" OD, 1.50" L 3DB2000

3D Bullseye (Metric)

3-D BullsEye Metric SizesDimensionsPart #
M10 X 1.0 .875" OD, 1.00" L3D 3BM10X10
M10 X 1.5 .875" OD, 1.00" L 3DBM10X15
M12 X 1.5 .875" OD, 1.00" L 3DBM12X15
M16 X 1.5 1" OD, 1" L 3DBM16X15
M20 X 1.5 1.25" OD, 1.062" L 3DBM20X15
M22 X 1.5  1.25" OD, 1.062" L 3DBM22X15
M24 X 1.5 1.375" OD, 1.125" L 3DBM24X15
M26 X 1.5 1.50" OD, 1.187" L 3DBM26X15
M27 X 1.5 1.50" OD, 1.187" L 3DBM27X15
M30 X 1.5 1.75" OD, 1.25" L 3DBM30X15
M30 2.0 1.75" OD, 1.25" L 3DBM30X20
M33 X 1.5 1.75" OD, 1.25" L 3DBM10X15

High Temperature Oil Sight Glass

HIGH TEMPERATURE OSGDimensionsPart #
High Temp 1oz, 1/4" NPT 2.75" OD, 2.50" L OSG1X250HT
High Temp 1oz, 3/8" NPT 2.75" OD, 2.50" L OSG1X375HT
High Temp 1oz, 1/2" NPT 2.75" OD, 2.50" L OSG1X500HT
High Temp 3oz, 1/4" NPT 3.50" OD, 2.50" L OSG3X250HT
High Temp 3oz, 3/8" NPT 3.50" OD, 2.50" L OSG3X375HT
High Temp 3oz, 1/2" NPT 3.50" OD, 2.50" L OSG3X500HT

Large Volume Oil Sight Glass

Large Volume Oil Sight GlassDimensionsPart #
16 oz 1/2" NPT 3.75" OD, 4.25" L OSG16X500
32 oz 1/2" NPT 4.25" OD, 5.25" L OSG32X500

Oil Level Indicator

Oil Level Indicator (OLI)DimensionsPart #
OLI - 3" Male, 1/2" NPT 0.875" OD, 3" L OLI3
OLI - 6" Male, 1/2" NPT 0.875" OD, 6" L OLI6
OLI - 9" Male, 1/2" NPT 0.875" OD, 9" L OLI9
OLI - 12" Male, 1/2" NPT Ends 0.875" OD, 12" L OLI12
OLI - 15" Male, 1/2" NPT 0.875" OD, 12" L OLI15
OLI - 18" Female, 1/2" & 3/8" NPTs 1.75" OD, 18" L OLI18
OLI - 21" Female, 1/2" & 3/8" NPTs 1.75" OD, 21" L OLI21
OLI - 24" Female, 1/2" & 3/8" NPTs 1.75" OD, 24" L OLI24
OLI - 27" Female, 1/2" & 3/8" NPTs 1.75" OD, 27" L OLI27
OLI - 30" Female, 1/2" & 3/8" NPTs 1.75" OD, 30" L OLI30