Jakarta Instrumentation merupakan website dari GUNAINDO MANDIRI yang bergerak dalam bidang Instrumentation, Pneumatic, Hydraulic & Control Equipment, menyediakan berbagai macam barang kebutuhan terutama untuk industri antara lain: 

1. Altimeter ( SUUNTO, BARIGO) 
2. Anemometer ( LUTRON) 
3. Air Cylinder ( SMC, FESTO, CKD, KURODA, MINDMAN, dll) 
4. Air Filter Regulator Lubricator ( SMC, FESTO, CKD, KURODA, MINDMAN, ESOP, dll) 
5. Air, Water, Gas & Oil Flow Meter ( DWYER, KOBOLD, FILL RITE, TOKICO, dll) 
6. ASTM Thermometer ( ALLA France) 
7. ASTM Hydrometer ( ALLA France0
8. Alcoholmeter ( ALLA France, BOECO Germany) 
9. BAUME Hydrometer ( ALLA France, BOECO Germany) 
10. Bimetal Thermometer model Raket, Payung, Every Angle ( ARMATHERM, SCHUH TECHNOLOGY, SENSE, SKON, WIKA, WIEKE, dll) 
11. Bejana Ukur u/ minyak
12. Diaphragm Pressure Gauge
13. Differential Pressure Gauge / Magnehelic ( DWYER, Manostar, dll) 
14. Deep Stick / Tongkat Ukur u/ minyak Kuningan & Stainless Steel
15. Fitting u/ Angin ( SMC, FESTO, CKD, ESOP, SANG-A, dll) 
16. Flowmeter / Rotameter u/ Air & Udara ( DWYER, WEIKE, dll) 
17. Flowmeter / Meteran Air, minyak ( Actaris, Tuthill, Fill Rite, Flotech, Flomec, dll) 
18. Flow Control/ Switches ( SIKA, SAGINOMIYA, JOHNSON CONTROL) 
19. Gelas Ukur Cylinder 10 ml - 2000 ml ( VITLAB Germany, RRC, dll) 
20. Hydrometer untuk Premium, Kerosin, Solar, Bio Solar, dll ( ALLA FRANCE ex. Perancis, ex. Germany) 
21. Hydrometer with Thermometer ( ALLA France) 
22. Hydraulic Valve/ Directional Valve ( TOKIMEC, YUKEN, NACHI, dll) 
23. Infrared Thermometer ( RAYTEX, IRTEK, BLUE GIZMO, dll) 
24. Level Gauge Brass/ Kuningan & Stainless Steel
25. Level Switch ( PARKER) 
26. Laboratory Bottles / Botol Laboratorium ( DURAN) 
27. Moisture Meter / MC Meter Kayu
28. MC Meter Kertas
29. Pressure Gauge ( WIKA, SCHUH TECHNOLOGY, ARMATHERM, FTB, YAMAMOTO KEIKI SEIKI, NAGANO KEIKI SEIKI, IMT, ASCROFT, WEIKE, SKON, MUELLER, FORBES, dll) 
30. Pressure Control ( HONEY WELL, FANAL, KROM SCHRODER, DANFOSS, SAGINOMIYA, TIVAL) 
31. Pressure Transmitter ( SCHUH TECHNOLOGY, KONICS) 
32. Pressure Gauge with Electric Contact
33. PH Meter ( EUTECH, HANNA) 
34. Refractometer ( ATAGO, ALLA FRANCE) 
35. Rain Gauge ( 0 - 35 mm TFA) 
36. Saccharimeter ( Alat ukur kadar Gula) 
37. Soil ph and Moisture Tester, DM-5, DM-13, DM-15 ( TAKEMURA) 
38. Solenoid Valve Angin, Air, Oli, Steam ( SMC, FESTO, CKD, KURODA, MINDMAN, ESOP, UNI-D, dll) 
39. Safety Valve ( HISEC, 317) 
40. Sight Glass ( KLINGER, REFLEX) 
41. Speedcontrol u/ Angin ( SMC, FESTO, CKD, ESOP, SANG-A, dll) 
42. Stopwatch Diamond
43. Thermohygrometer ( TFA, ALLA FRANCE, dll) 
44. Thermocouple type K, PT100, RTD, dll
45. Thermometer dinding, Thermometer stick, thermometer maximum minimum ( Thermometer max min) 
46. Thermometer Poket Analog / Digital
47. Thermometer Capillary / Thermometer Kapiler / Thermometer Kabel ( WIKA, SCHUH, ARMATHERM, SENSE, WEIKE, dll) 
48. Thermometer Straight Type, Thermometer L Type ( SIKA, MTB, dll) 
49. Thermometer with Electric Contact
50. Timbangan Digital ( OHAUS) 
51. Timer 60 menit
52. Tubing Pneumatic PU
53. DLL