Topcon Kr-8900 Service Manual -

The Topcon KR-8900 is a respected auto kerato-refractometer, widely used in optometry clinics and optical retail. Like all precision electro-optical instruments, it requires calibration, cleaning, and occasional repair. The service manual is the indispensable document for these tasks.

2025

DBHub.io Shutdown 2025-02-03

2024

Signing Windows executables - Our journey with SignPath 2024-11-08

Version 3.13.1 released 2024-10-16

Version 3.13.1-rc2 released 2024-09-30

Version 3.13.1-rc1 released 2024-09-12

Version 3.13.0 released 2024-08-24

Signing Windows Builds 2024-04-20

3.13.x-rc1 Available 2024-02-23

2023

Support for SQLite extensions added 2023-05-04

Live databases can be public .. and more updates 2023-04-27

Execute SQL Tab Overhaul 2023-04-26

Comments now enabled on blog posts 2023-04-24

More webUI related updates 2023-04-07

Live databases are now .. live! 2023-03-25

Go Library (go-dbhub) updated to work with Live databases 2023-03-25

Database sharing has been improved on DBHub.io 2023-03-25

2022

Apple Silicon (M1/M2/etc) macOS package available 2022-10-24

2021

Huge thanks to DigitalOcean for sponsoring us! 2021-07-25

Linux AppImage of 3.12.2 release available 2021-07-10

First release of Python library 'pydbhub' 2021-06-05

Version 3.12.2 released 2021-05-18

Thanks to our Patreon supporters, we have a HiDPI monitor! 2021-03-06

2020

Version 3.12.1 released 2020-11-09

First release candidate for 3.12.1 2020-09-27

New Go library for working with your DBHub.io databases 2020-08-01

New API for remotely executing SQLite queries 2020-07-19

PortableApp for 3.12.0 release now available 2020-06-18

Version 3.12.0 released 2020-06-16

First release candidate for 3.12.0 2020-06-08

First alpha release for 3.12.0 2020-04-15

Adding basic visualisation capability to dbhub.io 2020-04-08

2019

PortableApp for 3.11.2 release now available 2019-05-07

New landing page for DBHub.io 2019-04-26

Standard username/password logins now working for DBHub.io 2019-04-10

New download and daily users stats page 2019-04-09

Version 3.11.2 released 2019-04-04

Dark theme support in our nightly builds 2019-03-02

macOS installer rebuilt for 3.11.1 2019-02-23

Version 3.11.1 released 2019-02-18

Version 3.11.0 pulled - encrypting databases non-functional 2019-02-11

Version 3.11.0 released 2019-02-07

Added public web stats using Fathom 2019-02-07

Updated our website! 2019-01-31

2018

Third beta release of 3.11.0 2018-12-13

Second beta release of 3.11.0 2018-12-12

First beta release of 3.11.0 2018-11-27

First alpha release for 3.11.0 2018-10-10

New download servers 2018-08-09

Patreon account created 2018-06-08

Windows MSI installers now available 2018-06-02

2017

PortableApp version of 3.10.1 2017-09-28

Version 3.10.1 released 2017-09-20

Removed continuous AppImage builds for Linux 2017-09-08

AppImage builds for Linux 2017-09-02

Version 3.10.0 released 2017-08-20

Second beta release for 3.10.0 2017-08-14

First (beta) DBHub.io server with DB4S integration is online 2017-07-29

First beta release of 3.10.0 2017-07-21

Nightly builds now using static URLs 2017-05-17

WinXP version for 3.9.1 2017-05-14

2016

Rebuilt OSX binary for v3.9.1 2016-12-17

Initial DBHub.io server online 2016-12-15

PortableApp for 3.9.1 2016-10-20

New Qt5 based nightly builds online 2016-10-17

Version 3.9.1 released 2016-10-03

New sister project: DBHub.io 2016-09-26

PortableApp version of 3.9.0 2016-09-08

Version 3.9.0 released 2016-08-24

Version 3.9.0 beta1 released 2016-08-14

Test build with SQLCipher for Win64 2016-05-04

Added 64-bit Windows development instructions to the wiki 2016-05-02

PortableApp version of 3.8.0 2016-01-17

New 3.8.0 downloads for MacOS X 2016-01-06

2015

Fixed the downloads for v3.8.0 2015-12-26

Version 3.8.0 released 2015-12-25

PortableApp version of 3.7.0 2015-07-07

Version 3.7.0 released 2015-06-14

PortableApp version of 3.6.0v3 2015-05-09

Windows XP support added back 2015-05-05

Fixed windows installer for 3.6.0 2015-04-29

Problems with the windows installer for 3.6.0 2015-04-28

Version 3.6.0 released 2015-04-27

PortableApp version of 3.5.1 2015-02-17

Version 3.5.1 released 2015-02-08

Version 3.5.0 released 2015-01-31

PortableApp version of 3.4.0 2015-01-29

2014

Version 3.4.0 released 2014-10-29

Project renamed... (again) 2014-09-23

Nightly OSX builds are online 2014-09-15

Released new v3.3.1 .dmg for OSX 2014-09-02

Version 3.3.1 released 2014-08-31

Project renamed 2014-08-28

Version 3.3.0 released 2014-08-24

Version 3.2.0 released 2014-07-06